Abdus Salam
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Mohammad Abdus Salam Salam adopted the forename "Mohammad" in 1974 in response to the
anti-Ahmadiyya The Ahmadiyya branch of Islam has been subjected to various forms of religious persecution and Religious discrimination, discrimination since the movement's inception in 1889. The Ahmadiyya Muslim movement emerged within the Sunni Islam, Sun ...
decrees in Pakistan, similarly he grew his beard.
(; ; 29 January 192621 November 1996) was a Pakistani
theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics, which uses experi ...
. He shared the 1979
Nobel Prize in Physics The Nobel Prize in Physics () is an annual award given by the Royal Swedish Academy of Sciences for those who have made the most outstanding contributions to mankind in the field of physics. It is one of the five Nobel Prizes established by the ...
with Sheldon Glashow and
Steven Weinberg Steven Weinberg (; May 3, 1933 – July 23, 2021) was an American theoretical physicist and Nobel laureate in physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic inter ...
for his contribution to the electroweak unification theory. He was the first Pakistani and the first scientist from an Islamic country to receive a Nobel Prize and the second from an Islamic country to receive any Nobel Prize, after
Anwar Sadat Muhammad Anwar es-Sadat (25 December 1918 – 6 October 1981) was an Egyptian politician and military officer who served as the third president of Egypt, from 15 October 1970 until Assassination of Anwar Sadat, his assassination by fundame ...
of Egypt. Salam was scientific advisor to the Ministry of Science and Technology in Pakistan from 1960 to 1974, a position from which he played a major and influential role in the development of the country's science infrastructure. Salam contributed to numerous developments in theoretical and particle physics in Pakistan. He was the founding director of the
Space and Upper Atmosphere Research Commission The Space & Upper Atmosphere Research Commission, commonly referred to as SUPARCO, is the national space agency of Pakistan. The agency, originally established in 1961 as a committee in Karachi, became an independent commission in 1981. Its in ...
(SUPARCO), and responsible for the establishment of the Theoretical Physics Group (TPG). For this, he is viewed as the "scientific father" of this program. In 1974, Abdus Salam departed from his country in protest after the
Parliament of Pakistan The Parliament of Pakistan is the supreme Legislature, legislative body of the Islamic Republic of Pakistan. It is a bicameralism, bicameral federation, federal legislature, composed of the President of Pakistan and two houses: the Senate of ...
unanimously passed a parliamentary bill declaring members of the Ahmadiyya Muslim community, to which Salam belonged, non-Muslim. In 1998, following the country's Chagai-I nuclear tests, the Government of Pakistan issued a commemorative stamp, as a part of "Scientists of Pakistan", to honour the services of Salam. Salam's notable achievements include the Pati–Salam model, a
Grand Unified Theory A Grand Unified Theory (GUT) is any Mathematical model, model in particle physics that merges the electromagnetism, electromagnetic, weak interaction, weak, and strong interaction, strong fundamental interaction, forces (the three gauge theory, ...
he proposed along with Jogesh Pati in 1974, magnetic photon,
vector meson In high energy physics, a vector meson is a meson with total spin 1 and odd parity (usually noted as ). Vector mesons have been seen in experiments since the 1960s, and are well known for their spectroscopic pattern of masses. The vector mes ...
, work on
supersymmetry Supersymmetry is a Theory, theoretical framework in physics that suggests the existence of a symmetry between Particle physics, particles with integer Spin (physics), spin (''bosons'') and particles with half-integer spin (''fermions''). It propo ...
and most importantly,
electroweak theory In particle physics, the electroweak interaction or electroweak force is the unified description of two of the fundamental interactions of nature: electromagnetism (electromagnetic interaction) and the weak interaction. Although these two forc ...
, for which he was awarded the Nobel Prize. Salam made a major contribution in
quantum field theory In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines Field theory (physics), field theory and the principle of relativity with ideas behind quantum mechanics. QFT is used in particle physics to construct phy ...
and in the advancement of Mathematics at
Imperial College London Imperial College London, also known as Imperial, is a Public university, public research university in London, England. Its history began with Prince Albert of Saxe-Coburg and Gotha, Prince Albert, husband of Queen Victoria, who envisioned a Al ...
. With his student, Riazuddin, Salam made important contributions to the modern theory on neutrinos,
neutron stars A neutron star is the gravitationally collapsed core of a massive supergiant star. It results from the supernova explosion of a massive star—combined with gravitational collapse—that compresses the core past white dwarf star density to th ...
and
black holes A black hole is a massive, compact astronomical object so dense that its gravity prevents anything from escaping, even light. Albert Einstein's theory of general relativity predicts that a sufficiently compact mass will form a black hole. Th ...
, as well as the work on modernising
quantum mechanics Quantum mechanics is the fundamental physical Scientific theory, theory that describes the behavior of matter and of light; its unusual characteristics typically occur at and below the scale of atoms. Reprinted, Addison-Wesley, 1989, It is ...
and quantum field theory. As a teacher and science promoter, Salam is remembered as a founder and scientific father of
mathematical Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...
and theoretical physics in Pakistan during his term as the chief scientific advisor to the president. Salam heavily contributed to the rise of Pakistani physics within the global physics community. Up until shortly before his death, Salam continued to contribute to physics, and to advocate for the development of science in third-world countries.


Biography


Youth and education

Abdus Salam was born on 29 January 1926 in the Punjab Province of
British India The provinces of India, earlier presidencies of British India and still earlier, presidency towns, were the administrative divisions of British governance in South Asia. Collectively, they have been called British India. In one form or another ...
(now in
Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...
) into a Punjabi family professing Ahmadi Islam. He belonged to the
Rajput Rājpūt (, from Sanskrit ''rājaputra'' meaning "son of a king"), also called Thākur (), is a large multi-component cluster of castes, kin bodies, and local groups, sharing social status and ideology of genealogical descent originating fro ...
community, his son Ahmad Salam later recounting that he would tell him stories of Rajput cultural history "of which he was very proud"; as per Jagjit Singh in his biography of Salam, his family traced its genealogy back to a Rajput prince named Buddahn who converted to Islam at the hands of a
Sufi Sufism ( or ) is a mysticism, mystic body of religious practice found within Islam which is characterized by a focus on Islamic Tazkiyah, purification, spirituality, ritualism, and Asceticism#Islam, asceticism. Practitioners of Sufism are r ...
preacher and later founded the city of Jhang around the year 1160. Salam was the son of Chaudhary Muhammad Hussain, a school teacher of Jhang and Hajirah who belonged to Faizullah Chak near Batala. The name Choudhary Muhammad Hussain gave his son was Abd al-Salam which means "Servant of God". Abd means servant and Salam is one of the 99 names of God in the Qur'an. In English, his name is usually transliterated as Abdus Salam, which should be understood as a single given name. His father followed the custom of not giving a surname. Later in his life he added Mohammad to his name. Salam established an early reputation throughout Punjab for outstanding brilliance and academic achievement. At age 14, Salam scored the highest marks ever recorded for the entrance examination at the
Punjab University Punjab University may refer to: India * Punjab Agricultural University, a state agricultural university in Ludhiana, Punjab * I. K. Gujral Punjab Technical University, a state university in Kapurthala, Punjab * Maharaja Ranjit Singh Punjab Techn ...
. He won a full scholarship to the Government College University of
Lahore Lahore ( ; ; ) is the capital and largest city of the Administrative units of Pakistan, Pakistani province of Punjab, Pakistan, Punjab. It is the List of cities in Pakistan by population, second-largest city in Pakistan, after Karachi, and ...
. Salam was a versatile scholar, interested in
Urdu Urdu (; , , ) is an Indo-Aryan languages, Indo-Aryan language spoken chiefly in South Asia. It is the Languages of Pakistan, national language and ''lingua franca'' of Pakistan. In India, it is an Eighth Schedule to the Constitution of Indi ...
and
English literature English literature is literature written in the English language from the English-speaking world. The English language has developed over more than 1,400 years. The earliest forms of English, a set of Anglo-Frisian languages, Anglo-Frisian d ...
in which he excelled. After a month in Lahore, he went to
Bombay Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian States and union territories of India, state of Maharashtra. Mumbai is the financial centre, financial capital and the list of cities i ...
to study. In 1947, he came back to Lahore. But he soon picked up Mathematics as his concentration. Salam's mentor and tutors wanted him to become an English teacher, but Salam decided to stick with Mathematics. As a fourth-year student there, he published his work on
Srinivasa Ramanujan Srinivasa Ramanujan Aiyangar (22 December 188726 April 1920) was an Indian mathematician. Often regarded as one of the greatest mathematicians of all time, though he had almost no formal training in pure mathematics, he made substantial con ...
's problems in mathematics, and took his B.A. in Mathematics in 1944. His father wanted him to join the
Indian Civil Service The Indian Civil Service (ICS), officially known as the Imperial Civil Service, was the higher civil service of the British Empire in India during British Raj, British rule in the period between 1858 and 1947. Its members ruled over more than 3 ...
(ICS). In those days, the ICS was the highest aspiration for young university graduates and civil servants occupied a respected place in civil society. Respecting his father's wish, Salam tried for the
Indian Railways Indian Railways is a state-owned enterprise that is organised as a departmental undertaking of the Ministry of Railways (India), Ministry of Railways of the Government of India and operates India's national railway system. , it manages the fou ...
but did not qualify for the service as he failed the medical optical tests. The results further concluded that Salam failed a mechanical test required by railway engineers to gain a commission in the Railways, and that he was too young to compete for the job. Therefore, the Railways rejected Salam's job application. While in Lahore, Salam went on to attend the graduate school of Government College University. He received his MA in Mathematics from the Government College University in 1946. That same year, he was awarded a scholarship to
St John's College, Cambridge St John's College, formally the College of St John the Evangelist in the University of Cambridge, is a Colleges of the University of Cambridge, constituent college of the University of Cambridge, founded by the House of Tudor, Tudor matriarch L ...
, where he completed a BA degree with Double First-Class Honours in Mathematics and Physics in 1949. In 1950, he received the
Smith's Prize Smith's Prize was the name of each of two prizes awarded annually to two research students in mathematics and theoretical physics at the University of Cambridge from 1769. Following the reorganization in 1998, they are now awarded under the names ...
from Cambridge University for the most outstanding pre-doctoral contribution to Physics. After finishing his degrees,
Fred Hoyle Sir Fred Hoyle (24 June 1915 – 20 August 2001) was an English astronomer who formulated the theory of stellar nucleosynthesis and was one of the authors of the influential B2FH paper, B2FH paper. He also held controversial stances on oth ...
advised Salam to spend another year in the
Cavendish Laboratory The Cavendish Laboratory is the Department of Physics at the University of Cambridge, and is part of the School of Physical Sciences. The laboratory was opened in 1874 on the New Museums Site as a laboratory for experimental physics and is named ...
to do research in
experimental physics Experimental physics is the category of disciplines and sub-disciplines in the field of physics that are concerned with the observation of physical phenomena and experiments. Methods vary from discipline to discipline, from simple experiments and o ...
, but Salam had no patience for carrying out long experiments in the laboratory. Salam returned to Jhang and renewed his scholarship and returned to the United Kingdom to do his doctorate. He obtained a PhD degree in theoretical physics from the Cavendish Laboratory at Cambridge. His doctoral thesis titled "Developments in quantum theory of fields" contained comprehensive and fundamental work in
quantum electrodynamics In particle physics, quantum electrodynamics (QED) is the Theory of relativity, relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quant ...
. By the time it was published in 1951, it had already gained him an international reputation and the
Adams Prize The Adams Prize is a prize awarded each year by the Faculty of Mathematics at St John's College to a UK-based mathematician for distinguished research in mathematical sciences. The prize is named after the mathematician John Couch Adams and wa ...
. During his doctoral studies, his mentors challenged him to solve within one year an intractable problem which had defied such great minds as
Paul Dirac Paul Adrien Maurice Dirac ( ; 8 August 1902 – 20 October 1984) was an English mathematician and Theoretical physics, theoretical physicist who is considered to be one of the founders of quantum mechanics. Dirac laid the foundations for bot ...
and
Richard Feynman Richard Phillips Feynman (; May 11, 1918 – February 15, 1988) was an American theoretical physicist. He is best known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of t ...
. Within six months, Salam had found a solution for the
renormalization Renormalization is a collection of techniques in quantum field theory, statistical field theory, and the theory of self-similar geometric structures, that is used to treat infinities arising in calculated quantities by altering values of the ...
of meson theory. As he proposed the solution at the Cavendish Laboratory, Salam had attracted the attention of Hans Bethe,
J. Robert Oppenheimer J. Robert Oppenheimer (born Julius Robert Oppenheimer ; April 22, 1904 – February 18, 1967) was an American theoretical physics, theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World ...
and Dirac.


Academic career

After receiving his doctorate in 1951, Salam returned to Lahore at the Government College University as a Professor of Mathematics where he remained till 1954. In 1952, he was appointed professor and Chair of the Department of Mathematics at the neighbouring University of the Punjab. In the latter capacity, Salam sought to update the university curriculum, introducing a course in
quantum mechanics Quantum mechanics is the fundamental physical Scientific theory, theory that describes the behavior of matter and of light; its unusual characteristics typically occur at and below the scale of atoms. Reprinted, Addison-Wesley, 1989, It is ...
as a part of the undergraduate curriculum. However, this initiative was soon reverted by the Vice-Chancellor, and Salam decided to teach an evening course in Quantum Mechanics outside the regular curriculum. While Salam enjoyed a mixed popularity in the university, he began to supervise the education of students who were particularly influenced by him. As a result, Riazuddin remained the only student of Salam who had the privilege to study under Salam at the undergraduate and post-graduate level in Lahore, and post-doctoral level in Cambridge University. In 1953, Salam was unable to establish a research institute in Lahore, as he faced strong opposition from his peers. In 1954, Salam took fellowship and became one of the earliest fellows of the Pakistan Academy of Sciences. As a result of
1953 Lahore riots The 1953 Lahore riots were a series of violent riots against the Ahmadiyya movement, a faith marginalized in Pakistan, mainly in the city of Lahore, as well as the rest of Punjab, which were eventually quelled by the Pakistan Army who declared ...
, Salam went back to Cambridge and joined St John's College, and took a position as a professor of mathematics in 1954. In 1957, he was invited to take a chair at Imperial College, London, and he and Paul Matthews went on to set up the Theoretical Physics Group at Imperial College. As time passed, this department became one of the prestigious research departments that included well known physicists such as
Steven Weinberg Steven Weinberg (; May 3, 1933 – July 23, 2021) was an American theoretical physicist and Nobel laureate in physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic inter ...
, Tom Kibble, Gerald Guralnik, C. R. Hagen, Riazuddin, and John Ward. In 1957, Punjab University conferred Salam with an
honorary doctorate An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or '' ad hon ...
for his contribution in particle physics. The same year with help from his mentor, Salam launched a scholarship programme for his students in Pakistan. Salam retained strong links with Pakistan, and visited his country from time to time. At Cambridge and Imperial College he formed a group of theoretical physicists, the majority of whom were his Pakistani students. At age 33, Salam became one of the youngest persons to be elected a Fellow of the Royal Society (FRS) in 1959. Salam took a fellowship at the
Princeton University Princeton University is a private university, private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial ...
in 1959, where he met with
J. Robert Oppenheimer J. Robert Oppenheimer (born Julius Robert Oppenheimer ; April 22, 1904 – February 18, 1967) was an American theoretical physics, theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World ...
and to whom he presented his research work on neutrinos. Oppenheimer and Salam discussed the foundation of electrodynamics, problems and their solution. His dedicated personal assistant was Jean Bouckley. In 1980, Salam became a foreign fellow of the Bangladesh Academy of Sciences.


Scientific career

Early in his career, Salam made an important and significant contribution in
quantum electrodynamics In particle physics, quantum electrodynamics (QED) is the Theory of relativity, relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quant ...
and
quantum field theory In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines Field theory (physics), field theory and the principle of relativity with ideas behind quantum mechanics. QFT is used in particle physics to construct phy ...
, including its extension into
particle In the physical sciences, a particle (or corpuscle in older texts) is a small localized object which can be described by several physical or chemical properties, such as volume, density, or mass. They vary greatly in size or quantity, from s ...
and
nuclear physics Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter. Nuclear physics should not be confused with atomic physics, which studies th ...
. In his early career in Pakistan, Salam was greatly interested in mathematical series and their relation to physics. Salam had played an influential role in the advancement of nuclear physics, but he maintained and dedicated himself to mathematics and theoretical physics and focused Pakistan to do more research in theoretical physics. However, he regarded nuclear physics (nuclear fission and nuclear power) as a non-pioneering part of physics as it had already "happened". Even in Pakistan, Salam was the leading driving force in theoretical physics, with many scientists he continued to influence and encourage to keep their work on theoretical physics. Salam had a prolific research career in theoretical and high-energy physics. Salam had worked on theory of the
neutrino A neutrino ( ; denoted by the Greek letter ) is an elementary particle that interacts via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small ('' -ino'') that i ...
– an elusive particle that was first postulated by
Wolfgang Pauli Wolfgang Ernst Pauli ( ; ; 25 April 1900 – 15 December 1958) was an Austrian theoretical physicist and a pioneer of quantum mechanics. In 1945, after having been nominated by Albert Einstein, Pauli received the Nobel Prize in Physics "for the ...
in the 1930s. Salam introduced
chiral symmetry A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality). The spin of a particle may be used to define a handedness, or helicity, for that particle, which, in the case of a massless particl ...
in the theory of neutrinos. The introduction of chiral symmetry played crucial role in subsequent development of the theory of electroweak interactions. Salam later passed his work to Riazuddin, who made pioneering contributions in neutrinos. Salam introduced the massive
Higgs boson The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the excited state, quantum excitation of the Higgs field, one of the field (physics), fields in particl ...
s to the theory of the
Standard Model The Standard Model of particle physics is the Scientific theory, theory describing three of the four known fundamental forces (electromagnetism, electromagnetic, weak interaction, weak and strong interactions – excluding gravity) in the unive ...
, where he later predicted the existence of
proton decay In particle physics, proton decay is a hypothetical form of particle decay in which the proton decays into lighter subatomic particles, such as a neutral pion and a positron. The proton decay hypothesis was first formulated by Andrei Sakharov ...
. In 1963, Salam published his theoretical work on the
vector meson In high energy physics, a vector meson is a meson with total spin 1 and odd parity (usually noted as ). Vector mesons have been seen in experiments since the 1960s, and are well known for their spectroscopic pattern of masses. The vector mes ...
. The paper introduced the interaction of vector meson, photon (vector
electrodynamics In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interacti ...
), and the renormalisation of vector mesons' known mass after the interaction. In 1961, Salam began to work with John Clive Ward on
symmetries Symmetry () in everyday life refers to a sense of harmonious and beautiful proportion and balance. In mathematics, the term has a more precise definition and is usually used to refer to an object that is invariant under some transformations ...
and electroweak unification. In 1964, Salam and Ward worked on a
Gauge theory In physics, a gauge theory is a type of field theory in which the Lagrangian, and hence the dynamics of the system itself, does not change under local transformations according to certain smooth families of operations (Lie groups). Formally, t ...
for the
weak Weak may refer to: Songs * Weak (AJR song), "Weak" (AJR song), 2016 * Weak (Melanie C song), "Weak" (Melanie C song), 2011 * Weak (SWV song), "Weak" (SWV song), 1993 * Weak (Skunk Anansie song), "Weak" (Skunk Anansie song), 1995 * "Weak", a son ...
and electromagnetic interaction, subsequently obtaining
SU(2) In mathematics, the special unitary group of degree , denoted , is the Lie group of unitary matrices with determinant 1. The matrices of the more general unitary group may have complex determinants with absolute value 1, rather than real 1 ...
×
U(1) In mathematics, the circle group, denoted by \mathbb T or , is the multiplicative group of all complex numbers with absolute value 1, that is, the unit circle in the complex plane or simply the unit complex numbers \mathbb T = \. The circle g ...
model. Salam was convinced that all the
elementary particle In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. The Standard Model presently recognizes seventeen distinct particles—twelve fermions and five bosons. As a c ...
interactions are actually the gauge interactions. In 1968, together with Weinberg and Sheldon Glashow, Salam formulated the mathematical concept of their work. While in Imperial College, Salam, along with Glashow and
Jeffrey Goldstone Jeffrey Goldstone (born 3 September 1933) is a Great Britain, British theoretical physicist and an ''emeritus'' physics faculty member at the MIT MIT Center for Theoretical Physics, Center for Theoretical Physics. He worked at the University of ...
, mathematically proved the
Goldstone's theorem In physics, Goldstone bosons or Nambu–Goldstone bosons (NGBs) are bosons that appear necessarily in models exhibiting spontaneous breakdown of continuous symmetries. They were discovered by Yoichiro Nambu within the context of the BCS superc ...
, that a massless spin-zero object must appear in a theory as a result of spontaneous breaking of a continuous
global symmetry The symmetry of a physical system is a physical or mathematical feature of the system (observed or intrinsic) that is preserved or remains unchanged under some transformation. A family of particular transformations may be ''continuous'' (such ...
. In 1967-8, Salam and Weinberg incorporated the
Higgs mechanism In the Standard Model of particle physics, the Higgs mechanism is essential to explain the Mass generation, generation mechanism of the property "mass" for gauge bosons. Without the Higgs mechanism, all bosons (one of the two classes of particles ...
into Glashow's discovery, giving it a modern form in electroweak theory, and thus theorised half of the Standard Model. In 1968, together with Weinberg and Sheldon Glashow, Salam finally formulated the mathematical concept of their work. In 1966, Salam carried out pioneering work on a
hypothetical particle This is a list of known and hypothesized microscopic particles in particle physics, condensed matter physics and cosmology. Standard Model elementary particles Elementary particles are particles with no measurable internal structure; that is, ...
. Salam showed the possible
electromagnetic In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interacti ...
interaction between the
Magnetic monopole In particle physics, a magnetic monopole is a hypothetical particle that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa). A magnetic monopole would have a net north or south "magnetic charge". ...
and the C-violation, thus he formulated the magnetic photon. Following the publication of PRL Symmetry Breaking papers in 1964, Steven Weinberg and Salam were the first to apply the Higgs mechanism to electroweak symmetry breaking. Salam provided a mathematical postulation for the interaction between the Higgs boson and the electroweak symmetry theory. In 1972, Salam began to work with Indian-American theoretical physicist Jogesh Pati. Pati wrote to Salam several times expressing interest to work under Salam's direction, in response to which Salam eventually invited Pati to the ICTP seminar in Pakistan. Salam suggested to Pati that there should be some deep reason why the protons and electrons are so different and yet carry equal but opposite electric charge. Protons are composed of quarks, but the electroweak theory was concerned only with the electrons and neutrinos, with nothing postulated about quarks. If all of nature's ingredients could be brought together in one new symmetry, it might reveal a reason for the various features of these particles and the forces they feel. This led to the development of Pati–Salam model in particle physics. In 1973, Salam and Jogesh Pati were the first to notice that since
Quark A quark () is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nucleus, atomic nuclei ...
s and
Lepton In particle physics, a lepton is an elementary particle of half-integer spin (Spin (physics), spin ) that does not undergo strong interactions. Two main classes of leptons exist: electric charge, charged leptons (also known as the electron-li ...
s have very similar
SU(2) In mathematics, the special unitary group of degree , denoted , is the Lie group of unitary matrices with determinant 1. The matrices of the more general unitary group may have complex determinants with absolute value 1, rather than real 1 ...
×
U(1) In mathematics, the circle group, denoted by \mathbb T or , is the multiplicative group of all complex numbers with absolute value 1, that is, the unit circle in the complex plane or simply the unit complex numbers \mathbb T = \. The circle g ...
representation content, they all may have similar entities. They provided a simple realisation of the quark-lepton symmetry by postulating that lepton number was a fourth quark
colour Color (or colour in Commonwealth English; see spelling differences) is the visual perception based on the electromagnetic spectrum. Though color is not an inherent property of matter, color perception is related to an object's light absorp ...
, dubbed "violet". Physicists had believed that there were four fundamental forces of nature: the gravitational force, the strong and weak nuclear forces, and the electromagnetic force. Salam had worked on the unification of these forces from 1959 with Glashow and Weinberg. While at Imperial College London, Salam successfully showed that weak nuclear forces are not really different from electromagnetic forces, and two could inter-convert. Salam provided a theory that shows the unification of two fundamental forces of nature, weak nuclear forces and the electromagnetic forces, one into another. Glashow had also formulated the same work, and the theory was combined in 1966. In 1967, Salam proved the electroweak unification theory mathematically, and finally published the papers. For this achievement, Salam, Glashow, and Weinberg were awarded the Nobel Prize in Physics in 1979. The Nobel Prize Foundation paid tribute to the scientists and issued a statement saying: "For their contributions to the theory of the unified weak and electromagnetic interaction between elementary particles, including, inter alia, the prediction of the weak neutral current". Salam took the Nobel Prize medal to the house of his former professor, Anilendra Ganguly, who taught him at the Sanatan Dharma College in Lahore, and placed the medal around his neck, stating "Mr Anilendra Ganguly this medal is a result of your teaching and love of mathematics that you instilled in me". In the 1970s Salam continued trying to unify forces by including the strong interaction in a
grand unified theory A Grand Unified Theory (GUT) is any Mathematical model, model in particle physics that merges the electromagnetism, electromagnetic, weak interaction, weak, and strong interaction, strong fundamental interaction, forces (the three gauge theory, ...
.


Government work

Abdus Salam returned to Pakistan in 1960 to take charge of a government post given to him by President Ayub Khan. From her independence in 1947 after the
Partition of India The partition of India in 1947 was the division of British India into two independent dominion states, the Dominion of India, Union of India and Dominion of Pakistan. The Union of India is today the Republic of India, and the Dominion of Paki ...
, Pakistan has never had a coherent science policy, and total expenditure on research and development was only ~1.0% of Pakistan's GDP. Even the
Pakistan Atomic Energy Commission Pakistan Atomic Energy Commission (PAEC) () is a federally funded independent governmental agency, concerned with research and development of nuclear power, promotion of nuclear science, energy conservation and the peaceful use of nuclear techn ...
headquarters was located in a small room, and less than 10 scientists were working on fundamental physics concepts. Salam replaced
Salimuzzaman Siddiqui Salimuzzaman Siddiqui, ( ; 19 October 1897 – 14 April 1994) was a Pakistani organic chemist specialising in natural products, and a professor of chemistry at the University of Karachi. Siddiqui studied philosophy at Aligarh Muslim Univers ...
as the Science Advisor, and became first Member (technical) of PAEC. Salam expanded the web of physics research and development in Pakistan by sending more than 500 scientists abroad. In 1961 he approached President Khan to set up the country's first national space agency, thus on 16 September 1961 the
Space and Upper Atmosphere Research Commission The Space & Upper Atmosphere Research Commission, commonly referred to as SUPARCO, is the national space agency of Pakistan. The agency, originally established in 1961 as a committee in Karachi, became an independent commission in 1981. Its in ...
was established, with Salam as its first director. Before 1960, very little work on scientific development was done, and Salam called Ishfaq Ahmad, a nuclear physicist, who had left for Switzerland where he joined CERN, back to Pakistan. With the support of Salam, PAEC established PAEC Lahore Center-6, with Ishfaq Ahmad as its first director. In 1967, Salam became a central and administrative figure to lead the research in Theoretical and Particle physics. With the establishment of the Institute of Physics at
Quaid-e-Azam University Quaid-i-Azam University (QAU), founded as the University of Islamabad, is a Public university, public research university in Islamabad, Pakistan. Founded as the University of Islamabad in 1967, it was initially dedicated to postgraduate educat ...
, research in theoretical and particle physics was engaged. Under Salam's direction, physicists tackled the greatest outstanding problems in physics and mathematics and their physics research reached a point that prompted worldwide recognition of Pakistani physicists. From the 1950s, Salam had tried establishing high-powered research institutes in Pakistan, though he was unable to do so. He moved PAEC Headquarters to a bigger building, and established research laboratories all over the country. On the direction of Salam, Ishrat Hussain Usmani set up plutonium and uranium exploration committees throughout the country. In October 1961, Salam travelled to the United States and signed a space co-operation agreement between Pakistan and US. In November 1961, the US
National Aeronautics and Space Administration The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the United States's civil space program, aeronautics research and space research. Established in 1958, it su ...
(NASA) started to build a space facility – Flight Test Center (FTC) – at Sonmiani, a coastal town in
Balochistan Province Balochistan (; ; , ) is a province of Pakistan. Located in the southwestern region of the country, Balochistan is the largest province of Pakistan by land area but is the least populated one. It is bordered by the Pakistani provinces of Khybe ...
. Salam served as its first technical director. Salam played an influential and significant role in Pakistan's development of nuclear energy for peaceful purposes. In 1964, he was made head of Pakistan's
IAEA The International Atomic Energy Agency (IAEA) is an intergovernmental organization that seeks to promote the peaceful use of nuclear energy and to inhibit its use for any military purpose, including nuclear weapons. It was established in 1957 ...
delegation and represented Pakistan for a decade. The same year, Salam joined
Munir Ahmad Khan Munir Ahmad Khan (; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear engineer who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear we ...
– his lifelong friend and contemporary at Government College University. Khan was the first person in the IAEA that Salam had consulted about the establishment of the
International Centre for Theoretical Physics The Abdus Salam International Centre for Theoretical Physics (ICTP) is a research center for physical and mathematical sciences, located in Trieste, Friuli-Venezia Giulia, Italy. The center operates under a tripartite agreement between the Gov ...
(ICTP), a research physics institution, in
Trieste Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
, Italy. With an agreement signed with IAEA, the ICTP was set up with Salam as its first director. At IAEA, Salam had advocated the importance of nuclear power plants in his country. It was due to his effort that in 1965, Canada and Pakistan signed a nuclear energy co-operation deal. Salam obtained permission from President Ayub Khan – against the wishes of his own government functionaries – to set up the Karachi Nuclear Power Plant. Also in 1965, led by Salam, the United States and Pakistan signed an agreement in which the US provided Pakistan with a small research reactor (PARR-I). Salam had a long-held dream to establish a research institute in Pakistan, which he had advocated for on many occasions. In 1965 again, Salam and architect
Edward Durell Stone Edward Durell Stone (March 9, 1902 – August 6, 1978) was an American architect known for the formal, highly decorative buildings he designed in the 1950s and 1960s. His works include the Museum of Modern Art, in New York City; the Parliament H ...
signed a contract for the establishment of the Pakistan Institute of Nuclear Science and Technology (PINSTECH) at Nilore, Islamabad.


Space programme

In early 1961, Salam approached President Khan to lay the foundations of Pakistan's first executive agency to co-ordinate space research. By executive order on 16 September 1961 the
Space and Upper Atmosphere Research Commission The Space & Upper Atmosphere Research Commission, commonly referred to as SUPARCO, is the national space agency of Pakistan. The agency, originally established in 1961 as a committee in Karachi, became an independent commission in 1981. Its in ...
(SUPARCO) was established with Salam founding director. Salam immediately travelled to the United States, where he signed a space co-operation agreement with the US Government. In November 1961, NASA built the Flight Test Center in Balochistan Province. During this time, Salam visited the Pakistan Air Force Academy where he met with
Air Commodore Air commodore (Air Cdre or Air Cmde) is an air officer rank used by some air forces, with origins from the Royal Air Force. The rank is also used by the air forces of many countries which have historical British influence and it is sometimes ...
( Brigadier-General) Wladyslaw Turowicz – a Polish military scientist and an
aerospace engineer Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is s ...
. Turowicz was made the first technical director of the space centre, and a programme of rocket testing ensued. In 1964, while in the US Salam visited the
Oak Ridge National Laboratory Oak Ridge National Laboratory (ORNL) is a federally funded research and development centers, federally funded research and development center in Oak Ridge, Tennessee, United States. Founded in 1943, the laboratory is sponsored by the United Sta ...
, and met with nuclear engineers Salim Mehmud and Tariq Mustafa. Salam signed another agreement with the NASA which launched a programme to provide training to Pakistan's scientists and engineers. Both nuclear engineers returned to Pakistan and were inducted into SUPARCO.


Nuclear weapons programme

Salam knew the importance of
nuclear technology Nuclear technology is technology that involves the nuclear reactions of atomic nucleus, atomic nuclei. Among the notable nuclear technologies are nuclear reactors, nuclear medicine and nuclear weapons. It is also used, among other things, in s ...
in Pakistan, for civilian and peaceful purposes. But, according to his biographers, Salam played an ambiguous role in Pakistan's own atomic bomb project. As late as the 1960s, Salam made an unsuccessful proposal for the establishment of a nuclear fuel reprocessing plant, but it was deferred on economic grounds by Ayub Khan. According to Rehman, Salam's influence in nuclear development was diminished as late as 1974, and he became critical of Bhutto's control over science. But Salam personally did not terminate his connection with the scientists working in the theoretical physics division at PAEC. As early as 1972–73, he had been a great advocate for the atomic bomb project, but subsequently took a stance against it after he fell out with Bhutto over the Second Amendment to the Constitution of Pakistan which declared the Ahmaddiya denomination to be non-Islamic. In 1965, Salam led the establishing of the nuclear research institute PINSTECH. In 1965, the plutonium Pakistan Atomic Research Reactor (PARR-I) went
critical Critical or Critically may refer to: *Critical, or critical but stable, medical states **Critical, or intensive care medicine * Critical juncture, a discontinuous change studied in the social sciences. *Critical Software, a company specializing i ...
under Salams' leadership. In 1973, Salam proposed the idea of establishing an annual college to promote scientific activities in the country to the Chairman of PAEC, Munir Khan, who accepted and fully supported the idea. This led to the establishment of the International Nathiagali Summer College on Physics and Contemporary Needs (INSC), where each year since 1976 scientists from all over the world come to Pakistan to interact with local scientists. The first annual INSC conference was held on advanced particle and nuclear physics. In November 1971, Salam met with
Zulfikar Ali Bhutto Zulfikar Ali Bhutto (5 January 1928 – 4 April 1979) was a Pakistani barrister and politician who served as the fourth president of Pakistan from 1971 to 1973 and later as the ninth Prime Minister of Pakistan, prime minister of Pakistan from 19 ...
in his residence, and following Bhutto's advice, went to the United States to avoid the Indo-Pakistani War of 1971. Salam travelled to the US and returned to Pakistan with scientific literature about the
Manhattan Project The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the ...
, and calculations involving atomic bombs. In 1972, the Government of Pakistan learned about the development status of the first atomic bomb completed under the Indian nuclear programme. On 20 January 1972, Salam, as Science Advisor to the
President of Pakistan The president of Pakistan () is the head of state of the Islamic Republic of Pakistan. The president is the nominal head of the executive and the supreme commander of the Pakistan Armed Forces.
, managed and participated in a secret meeting of nuclear scientists with former Prime Minister, Zulfikar Ali Bhutto, in Multan, known as the 'Multan Meeting'. At this meeting Bhutto orchestrated the development of a deterrence programme. At the meeting, only I. H. Usmani protested, believing that the country had neither the facilities or talent to carry out such an ambitious and technologically demanding project, whilst Salam remained quiet. Here, Bhutto entrusted Salam and appointed Munir Khan as Chairman of PAEC, and head of the atomic bomb program, as Salam had supported Khan. A few months after the meeting, Salam, Khan, and Riazuddin, met with Bhutto in his residence where the scientists briefed him about the nuclear weapons program. After the meeting, Salam established the 'Theoretical Physics Group' (TPG) in PAEC. Salam led groundbreaking work at TPG until 1974. An office was set up for Salam in the Prime Ministers' Secretariat by order of Bhutto. Salam immediately started to motivate and invite scientists to begin work with PAEC in the development of fission weapons. In December 1972, two
theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics, which uses experi ...
s working at the
International Centre for Theoretical Physics The Abdus Salam International Centre for Theoretical Physics (ICTP) is a research center for physical and mathematical sciences, located in Trieste, Friuli-Venezia Giulia, Italy. The center operates under a tripartite agreement between the Gov ...
were asked by Salam to report to
Munir Ahmad Khan Munir Ahmad Khan (; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear engineer who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear we ...
, the scientific director of the program. This marked the beginning of the TPG, reporting directly to Salam. The TPG, in PAEC, was assigned to conduct research in fast neutron calculations,
hydrodynamics In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids – liquids and gases. It has several subdisciplines, including (the study of air and other gases in ...
(how the explosion produced by a chain reaction might behave), problems of neutron diffusion, and the development of theoretical designs of Pakistan's nuclear weapon devices. Later, the TPG under Riazuddin began to directly report to Salam, and the work on the theoretical design of the nuclear weapon was completed in 1977. In 1972, Salam formed the Mathematical Physics Group, under Raziuddin Siddiqui, that was charged, with TPG, with carrying out research in the theory of simultaneity during the detonation process, and the mathematics involved in the theory of nuclear fission. Following India's surprise
nuclear test Nuclear weapons tests are experiments carried out to determine the performance of nuclear weapons and the effects of their explosion. Nuclear testing is a sensitive political issue. Governments have often performed tests to signal strength. Bec ...
Pokhran-I – in 1974,
Munir Ahmad Khan Munir Ahmad Khan (; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear engineer who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear we ...
had called a meeting to initiate work on an atomic bomb. Salam was there and Muhammad Hafeez Qureshi was appointed head of the Directorate of Technical Development (DTD) in PAEC. The DTD was set up to co-ordinate the work of the various specialised groups of scientists and engineers working on different aspects of the atomic bomb. The word "
bomb A bomb is an explosive weapon that uses the exothermic reaction of an explosive material to provide an extremely sudden and violent release of energy. Detonations inflict damage principally through ground- and atmosphere-transmitted mechan ...
" was never used in this meeting, but the participants fully understood what was being discussed. In March 1974, Salam and Khan also established the Wah Group Scientist that was charged with manufacturing materials, explosive lenses and triggering mechanism development of the weapon. Following the setting up of DTD, Salam, Riazuddin and
Munir Ahmad Khan Munir Ahmad Khan (; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear engineer who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear we ...
, visited the
Pakistan Ordnance Factories The Pakistan Ordnance Factories (POF) is a major firearms and a defence contractor headquartered in Wah Cantt, Punjab, Pakistan. Described as "the largest defence industrial complex under the Ministry of Defence Production, producing convent ...
(POF) where they held talks with senior military engineers led by POF chairman
Lieutenant-General Lieutenant general (Lt Gen, LTG and similar) is a military rank used in many countries. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the battlefield, who was normall ...
Qamar Ali Mirza. It was there that the Corps of Engineers built the Metallurgical Laboratory in Wah Cantonment in 1976. Salam remained associated with the nuclear weapons programme until mid-1974, when he left the country after Ahmadi were declared non-Muslims by the Pakistani Parliament. His own relations with Prime minister Bhutto fell out and turned into open hostility after the Ahmadiyya Community was declared as not-Islamic; he lodged a public and powerful protest against Bhutto regarding this issue and gave great criticism to Bhutto over his control over science. In spite of this, Salam maintained close relations with the theoretical physics division at PAEC who kept him informed about the status of the calculations needed to calculate the performance of the atomic bomb, according to Norman Dombey. After seeing Indian aggression, the
Siachen conflict The Siachen conflict, sometimes referred to as the Siachen Glacier conflict or the Siachen War, was a military conflict Indo-Pakistani wars and conflicts, between India and Pakistan over the disputed Siachen Glacier region in Kashmir. The conf ...
in Northern Pakistan, followed by India's Operation Brasstacks in Southern Pakistan, Salam again renewed his ties with senior scientists working in the atomic bomb projects, who had kept him informed about the scientific development of the program. In the 1980s, Salam personally approved many appointments and a large influx of Pakistani scientists to the associateship program at ICTP and
CERN The European Organization for Nuclear Research, known as CERN (; ; ), is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, western suburb of Gene ...
, and engaged in research in theoretical physics with his students at the ICTP. In 2008, Indian scholar Ravi Singh noted in his book ''The Military Factor in Pakistan'' that, "in 1978, Abdus Salam with PAEC officials, paid a secret visit to China, and was instrumental in initiating industrial nuclear cooperation between the two countries." Although he had left the country, Salam did not hesitate to advise the PAEC and Theoretical and Mathematical Physics Group on important scientific matters, and kept his close association with TPG and PAEC.


Advocacy for science

In 1964, Salam founded the
International Centre for Theoretical Physics The Abdus Salam International Centre for Theoretical Physics (ICTP) is a research center for physical and mathematical sciences, located in Trieste, Friuli-Venezia Giulia, Italy. The center operates under a tripartite agreement between the Gov ...
(ICTP),
Trieste Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
, in Italy and served as its director until 1993. In 1974, he founded the International Nathiagali Summer College (INSC) to promote science in Pakistan. The INSC is an annual meeting of scientists from all over the world who come to Pakistan and hold discussions on physics and science. Even today, the INSC holds annual meetings, and Salam's pupil Riazuddin has been its director since its start. In 1997, the scientists at ICTP commemorated Salam and renamed ICTP as the " Abdus Salam International Centre for Theoretical Physics". Throughout the years, he served on a number of United Nations committees concerning science and technology in developing countries. Salam also founded the Third World Academy of Sciences (TWAS) and was a leading figure in the creation of a number of international centres dedicated to the advancement of science and technology. During a visit to the Institute of Physics at
Quaid-i-Azam University Quaid-i-Azam University (QAU), founded as the University of Islamabad, is a public research university in Islamabad, Pakistan. Founded as the University of Islamabad in 1967, it was initially dedicated to postgraduate study, but later expande ...
in 1979, Salam explained after receiving an award: ''Physicists believed there are four fundamental forces of nature; the gravitational force, the weak and strong nuclear force, and the electromagnetic force''. Salam was a firm believer that "scientific thought is the common heritage of mankind", and that developing nations needed to help themselves, and invest in their own scientists to boost development and reduce the gap between the Global South and the Global North, thus contributing to a more peaceful world. In 1981, Salam became a founding member of the World Cultural Council. Although Salam left Pakistan, he did not terminate his connection to home. He continued inviting Pakistan's scientists to ICTP, and maintained a research programme for them. Many prominent scientists, including Ghulam Murtaza, Riazuddin, Kamaluddin Ahmed, Faheem Hussain, Raziuddin Siddiqui,
Munir Ahmad Khan Munir Ahmad Khan (; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear engineer who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear we ...
, Ishfaq Ahmad, and I. H. Usmani, considered him as their mentor and a teacher.


Personal life

Abdus Salam was a very private individual, who kept his public and personal lives quite separate. He married twice; first time to a cousin, the second time as well in accordance with
Islamic law Sharia, Sharī'ah, Shari'a, or Shariah () is a body of religious law that forms a part of the Islamic tradition based on scriptures of Islam, particularly the Qur'an and hadith. In Islamic terminology ''sharīʿah'' refers to immutable, intan ...
. At his death, he was survived by three daughters and a son by his first wife, and a son and daughter by his second, Professor Dame Louise Johnson, formerly Professor of molecular biophysics at
Oxford University The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the second-oldest continuously operating u ...
. Two of his daughters are Anisa Bushra Salam Bajwa and Aziza Rahman.


Religion

Salam was an Ahmadi, who saw his religion as a fundamental part of his scientific work. He once wrote that "the Holy Quran enjoins us to reflect on the verities of Allah's created laws of nature; however, that our generation has been privileged to glimpse a part of His design is a bounty and a grace for which I render thanks with a humble heart."'' During his acceptance speech for the Nobel Prize in Physics, Salam quoted verses from the
Quran The Quran, also Romanization, romanized Qur'an or Koran, is the central religious text of Islam, believed by Muslims to be a Waḥy, revelation directly from God in Islam, God (''Allah, Allāh''). It is organized in 114 chapters (, ) which ...
and stated: In 1974, the Pakistan parliament made the Second Amendment to the Constitution of Pakistan that declared Ahmadis to be . In protest, Salam left Pakistan for London. After his departure, he did not completely cut his ties to Pakistan, and kept a close association with the Theoretical Physics Group as well as academic scientists from the Pakistan Atomic Energy Commission.


Death

Abdus Salam died on 21 November 1996 at the age of 70 in
Oxford Oxford () is a City status in the United Kingdom, cathedral city and non-metropolitan district in Oxfordshire, England, of which it is the county town. The city is home to the University of Oxford, the List of oldest universities in continuou ...
, England, from
progressive supranuclear palsy Progressive supranuclear palsy (PSP) is a late-onset neurodegenerative disease involving the gradual deterioration and death of specific volumes of the brain, linked to 4-repeat tau pathology. The condition leads to symptoms including Balance di ...
. His body was returned to Pakistan and kept in Darul Ziafat, where some 13,000 men and women visited to pay their last respects. Approximately 30,000 people attended his funeral prayers. Salam was buried in Bahishti Maqbara, a cemetery established by the Ahmadiyya Community at Rabwah, Punjab, Pakistan, next to his parents' graves. The epitaph on his tomb initially read "First Muslim Nobel Laureate". The Pakistani government removed "Muslim" and left only his name on the headstone. They are the only nation to officially declare that Ahmadis are non-Muslim. The word "Muslim" was initially obscured on the orders of a local magistrate before moving to the national level. Under Ordinance XX of 1984, being an Ahmadi, he was considered a non-Muslim according to the definition provided in the Second Amendment to the Constitution of Pakistan.


Legacy

Salam's work in Pakistan has been far reaching and regarded as highly influential. He is remembered by his peers and students as the "father of Pakistan's school of Theoretical Physics" as well as Pakistan's science. Salam was a charismatic and iconic figure, a symbol among them of what they were working or researching toward in their fields. His students, fellow scientists and engineers, remembered him as brilliant teacher, and engaging researcher who would also influence others to do the same. The International Centre for Theoretical Physics established by Salam has continued to train scientists from developing countries. Salam founded the Space Research Commission of and was its first director. In 1998, the Government of Pakistan issued a commemorative stamp to honour Salam as part of its "Scientists of Pakistan" series. His alma mater, Government College Lahore, now a university, has the ''Abdus Salam Chair in Physics'' and Abdus Salam School of Mathematical Sciences named after him. ''The Abdus Salam Chair'' was also established in his honour at the Syed Babar Ali School of Science and Engineering in the
Lahore University of Management Sciences Lahore University of Management Sciences, also known by its acronym LUMS, is a Private university, private research university in Lahore, Punjab, Pakistan, Punjab, Pakistan. Founded in 1985, it is ranked as one of the most prestigious modern Li ...
. He made a significant contribution towards the 2012 success in the search for the
Higgs boson The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the excited state, quantum excitation of the Higgs field, one of the field (physics), fields in particl ...
. Salam has been commemorated by noted and prominent Pakistani scientists, who were also his students. Many scientists have recalled their college experiences. Ghulam Murtaza, a professor of plasma physics at the Government College University and student of Salam, wrote:
When Dr. Salam was to deliver a lecture, the hall would be packed and although the subject was Particle Physics, his manner and eloquence was such as if he was talking about literature. When he finished his lectures, listeners would often burst into spontaneous applause and give him a standing ovation. People from all parts of the world would come to Imperial College and seek Dr. Salam's help. He would give a patient hearing to everyone including those who were talking nonsense. He treated everyone with respect and compassion and never belittled or offended anyone. Dr. Salam's strength was that he could "sift jewels from the sand".Zainab Mahmood (26 November 2004).Chowk: Science
Ishfaq Ahmad, a lifelong friend of Salam recalls:
Dr Salam was responsible for sending about 500 physicists, mathematicians and scientists from Pakistan, for PhD's to the best institutions in UK and USA.
In August 1996 another lifelong friend,
Munir Ahmad Khan Munir Ahmad Khan (; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear engineer who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear we ...
, met Salam in Oxford. Khan, who headed the Pakistan and weapons of mass destruction, nuclear weapons and Nuclear power in Pakistan, nuclear energy programmes, said:
My last meeting with Abdus Salam was only three months ago. His disease had taken its toll and he was unable to talk. Yet he understood what was said. I told him about the celebration held in Pakistan on his seventieth birthday. He kept staring at me. He had risen above praise. As I rose to leave he pressed my hand to express his feelings as if he wanted to thank everyone who had said kind words about him. Dr. Abdus Salam had deep love for Pakistan in spite of the fact that he was treated unfairly and indifferently by his own country. It became more and more difficult for him to come to Pakistan and this hurt him deeply. Now he has returned home finally, to rest in peace for ever in the soil that he loved so much. May be in the years to come we will rise above our prejudice and own him and give him, after his death, what we could not when he was alive. We Pakistanis may choose to ignore Dr. Salam, but the world at large will always remember him.
However, Salam's legacy is often ignored in the Pakistani education system despite his achievements. According to the documentary 'Salam: The First ****** Nobel Laureate,' very few young Pakistanis have heard of him, and his name is not mentioned in Pakistani school textbooks. In 2020, a group of students belonging to the State Youth Parliament desecrated an image of Salam that was present at a college in Gujranwala, while chanting slogans against the Ahmadiyya community. This deliberate effort to stifle mention of Salam is attributed to Salam belonging to the Ahmadiyya Muslim community, who have faced state-sponsored discrimination since the 1970s.


Documentaries on Abdus Salam

;Salam – the film LLC started formally researching and developing a film on the science and life of Abdus Salam in 2004, two years after the producers had conceived of the idea. A fundraising teaser was released by Kailoola Productions to coincide with Salam's birth anniversary on 29 January 2017. The post-production phase of this documentary film, pending funding, is estimated at US$150,000. The film ''Salam: The First ****** Nobel Laureate'', directed by the Indian-American documentary filmmaker Anand Kamalakar, was announced in 2018 and released on Netflix in October 2019. ;Abdus Salam Pilgrim Films released ''The Dream of Symmetry'' in September 2011. Their press release describes it as presenting "the extraordinary figure of Abdus Salam, who not only was an outstanding scientist but also a generous humanitarian and a valuable person. His rich and busy life was an endless quest for symmetry, that he pursued in the universe of physical laws and in the world of human beings."


Honours

Salam was elected to the American Academy of Arts and Sciences in 1971, the United States National Academy of Sciences in 1979, and the American Philosophical Society in 1992. In 1997, scientists at ICTP renamed the institute as the Abdus Salam International Centre for Theoretical Physics in the honour of Salam. Salam's services have been recognised in Pakistan, as his students have openly spoken and stressed the importance of Science and Technology in Pakistan. In 1999, per the recommendation of Ishfaq Ahmad, the Government of Pakistan led the establishment of the Abdus Salam Chair in Physics at the Government College University (Lahore), Government College University. On 22 November 2009, the Director of the Abdus Salam International Centre for Theoretical Physics gifted the original Nobel Prize Certificate to his alma mater. In 2011, GCU's Salam Chair in Physics held a one-day-long conference that was attributed to Abdus Salam. Salam's students Ghulam Murtaza, Pervez Hoodbhoy, Riazuddin and Tariq Zaidi discussed the life and works of Salam, and brought to light his achievements in Pakistan and Physics. While covering the media converge on Salam's tribute, ''The News International'', referred to Salam as the "great Pakistan scientist". In 1998, the Edward A. Bouchet-ICTP Institute was renamed as the Edward Bouchet Abdus Salam Institute. In 2003, the Government of Punjab (Pakistan), Government of Punjab created an institute of excellence for the Mathematical Sciences, the Abdus Salam School of Mathematical Sciences, in Salam's Alma mater – Government College University (Lahore), Government College University. In 2008, in an opinion piece, ''Daily Times (Pakistan), Daily Times'' called Salam "one of the greatest scientists Pakistan has ever produced". In 2015, the Academy of Young Researchers and Scholars, Lahore, renamed its library as the "Abdus Salam Library". In the town of Vaughan, Ontario, Canada, near the headquarters of the Canadian branch of the Ahmadiyya Community, of which Abdus Salam was a member, the community has named a street after him, 'Abdus Salam Street', while at
CERN The European Organization for Nuclear Research, known as CERN (; ; ), is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, western suburb of Gene ...
in Geneva, Switzerland there is 'List of streets at CERN, Route Salam'. Additionally, there are two annual Abdus Salam science fairs, one held in Canada and the other in the US. Each is organised as a National event for young scientists from the Ahmadiyya Community in an effort to motivate youth toward scientific endeavour. On 6 December 2016, Pakistan's Prime Minister Nawaz Sharif approved the renaming of
Quaid-i-Azam University Quaid-i-Azam University (QAU), founded as the University of Islamabad, is a public research university in Islamabad, Pakistan. Founded as the University of Islamabad in 1967, it was initially dedicated to postgraduate study, but later expande ...
's (QAU) physics centre to the Professor Abdus Salam Center for Physics. It was also announced that the ''Professor Abdus Salam Fellowship'' will be established, which will include five annual fully funded Pakistani PhD students in the field of Physics in "leading international universities". In November 2020, English Heritage erected a blue plaque in Salam's honour in Campion Road, Putney, London, at the house that was his London home for almost 40 years. In June 2023, Imperial College, London announced the renaming of its Imperial College Central Library as the Abdus Salam Library.


Awards and recognition

In 1979, Salam was awarded the 1979
Nobel Prize in Physics The Nobel Prize in Physics () is an annual award given by the Royal Swedish Academy of Sciences for those who have made the most outstanding contributions to mankind in the field of physics. It is one of the five Nobel Prizes established by the ...
, along with Glashow and Weinberg, ''For their contributions to the theory of the unified weak and electromagnetic interaction between elementary particles, including, inter alia, the prediction of the weak neutral current''. Salam received high civil and science awards from all over the world. Salam is recipient of Civil decorations of Pakistan, first high civil awards – Sitara-e-Pakistan, Star of Pakistan (1959) and the Nishan-e-Imtiaz (1979) – awarded by the President of Pakistan for Salams' outstanding services to Pakistan. The National Center for Physics (NCP) contains an ''Abdus Salam Museum'' dedicated to the life of Salam and his work as he discovered and formulated the Electroweak Theory. Below is the list of awards that were conferred to Salam in his lifetime. * Nobel Prize in Physics (Stockholm, Sweden) (1979) * Hopkins Prize (Cambridge University) for "the most outstanding contribution to Physics during 1957–1958" *
Adams Prize The Adams Prize is a prize awarded each year by the Faculty of Mathematics at St John's College to a UK-based mathematician for distinguished research in mathematical sciences. The prize is named after the mathematician John Couch Adams and wa ...
(Cambridge University) (1958) * Fellow of the Royal Society (1959) *
Smith's Prize Smith's Prize was the name of each of two prizes awarded annually to two research students in mathematics and theoretical physics at the University of Cambridge from 1769. Following the reorganization in 1998, they are now awarded under the names ...
(Cambridge University) (1950) * Sitara-e-Pakistan by the
President of Pakistan The president of Pakistan () is the head of state of the Islamic Republic of Pakistan. The president is the nominal head of the executive and the supreme commander of the Pakistan Armed Forces.
for contribution to science in Pakistan (1959) * Pride of Performance Award by the
President of Pakistan The president of Pakistan () is the head of state of the Islamic Republic of Pakistan. The president is the nominal head of the executive and the supreme commander of the Pakistan Armed Forces.
(1958) * First recipient of James Clerk Maxwell Medal and Prize (Physical Society, London) (1961) * Hughes Medal (Royal Society, London) (1964) * Atoms for Peace Award (Atoms for Peace Foundation) (1968) * J. Robert Oppenheimer Memorial Prize and Medal (University of Miami) (1971) * Guthrie Medal and Prize (1976) * Sir Devaprasad Sarvadhikary Gold Medal (Calcutta University) (1977) * Matteucci Medal, Matteuci Medal (Accademia Nazionale dei Lincei, Rome) (1978) * John Torrence Tate Medal (American Institute of Physics) (1978) * Royal Medal (Royal Society, London) (1978) * Nishan-e-Imtiaz by the
President of Pakistan The president of Pakistan () is the head of state of the Islamic Republic of Pakistan. The president is the nominal head of the executive and the supreme commander of the Pakistan Armed Forces.
for outstanding performance in Scientific projects in Pakistan (1979) * Albert Einstein Medal, Einstein Medal (UNESCO, Paris) (1979) * Shri R.D. Birla Award (India Physics Association) (1979) * Order of Andrés Bello (Venezuela) (1980) * Order of Istiqlal (Jordan) (1980) * Order of Merit of the Italian Republic (1980) * Josef Stefan Medal (Josef Stefan Institute, Ljublijana) (1980) * Gold Medal for Outstanding Contributions to Physics (Czechoslovak Academy of Sciences, Prague) (1981) * Peace Medal (Charles University, Prague) (1981) * Doctor of Science from University of Chittagong (1981) * Lomonosov Gold Medal (USSR Academy of Sciences) (1983) * Premio Umberto Biancamano (Italy) (1986) * Dayemi International Peace Award (Bangladesh) (1986) * First Edinburgh Medal and Prize (Scotland) (1988) * "Genoa" International Development of Peoples Prize (Italy) (1988) * Order of the British Empire, Honorary Knight Commander of the Order of the British Empire (1989) * Catalunya International Prize (Spain) (1990) * Copley Medal (Royal Society, London) (1990)


Awards named after Salam

The Abdus Salam Award (also called the Salam Prize) is an award established to recognise high achievements and contributions in physical and natural sciences. In 1979, Riazuddin, Fayyazuddin and Asghar Qadir met with Salam, and presented the idea of creating an award to appreciate scientists, resident in Pakistan, in their respective fields. Salam donated the money he had won as he felt that he had no right use for the prize money. It was endowed by Asghar Qadir, Riazuddin and Fayyazuddin in 1980, and it was first awarded in 1981. The winners are selected by a committee (consisted of Aghar Qadir, Fayyazuddin, Riazuddin, and others) of the Center for Advanced Mathematics and Physics (CAMP), which administers the award. The Abdus Salam Medal is presented by the Third World Academy of Sciences in
Trieste Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
, Italy. First given in 1995, the award is presented to the people who have served the cause of science in the Developing World. The Abdus Salam Shield of Honor in Mathematics was initiated by the National Mathematical Society of Pakistan to promote and recognize quality research in Mathematics in 2015. It was awarded for the first time in 2016.


Contributions

Salam's primary focus was research on the physics of elementary particles. His particular numerous groundbreaking contributions included: * two-component
neutrino A neutrino ( ; denoted by the Greek letter ) is an elementary particle that interacts via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small ('' -ino'') that i ...
theory and the prediction of the inevitable parity violation in weak interaction; * gauge Unified field theory, unification of weak and electromagnetic interactions, the unified force is called the "Electroweak interaction, Electroweak" force, a name given to it by Salam, and which forms the basis of the
Standard Model The Standard Model of particle physics is the Scientific theory, theory describing three of the four known fundamental forces (electromagnetism, electromagnetic, weak interaction, weak and strong interactions – excluding gravity) in the unive ...
in particle physics; * predicted the existence of weak neutral currents, and W and Z bosons, before their experimental discovery * symmetry properties of elementary particles; unitary symmetry; * renormalization of meson theories; * gravity theory and its role in particle physics; two tensor theory of gravity and strong interaction physics; * unification of electroweak with strong nuclear forces, grand unification theory; * related prediction of proton-decay; * Pati–Salam model, a grand unification theory; * Supersymmetry theory, in particular formulation of Superspace and formalism of superfields in 1974; * the theory of supermanifolds, as a geometrical framework for understanding supersymmetry, in 1974; * Superalgebra, Supergeometry, the geometric basis for supersymmetry, in 1974; * application of the
Higgs mechanism In the Standard Model of particle physics, the Higgs mechanism is essential to explain the Mass generation, generation mechanism of the property "mass" for gauge bosons. Without the Higgs mechanism, all bosons (one of the two classes of particles ...
to 'electroweak symmetry breaking'; * prediction of the magnetic photon in 1966;


Institutes named after Abdus Salam and other named entities

* Abdus Salam Centre for Physics (Department of Physics),
Quaid-e-Azam University Quaid-i-Azam University (QAU), founded as the University of Islamabad, is a Public university, public research university in Islamabad, Pakistan. Founded as the University of Islamabad in 1967, it was initially dedicated to postgraduate educat ...
, Islamabad, Pakistan * Abdus Salam National Centre for Mathematics (ASNCM), Government College University, Lahore, Pakistan. * Abdus Salam Chair in Physics (ASCP), Government College University, Lahore, Pakistan. * Abdus Salam International Centre for Theoretical Physics,
Trieste Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
, Italy. * Abdus Salam School of Mathematical Sciences,
Lahore Lahore ( ; ; ) is the capital and largest city of the Administrative units of Pakistan, Pakistani province of Punjab, Pakistan, Punjab. It is the List of cities in Pakistan by population, second-largest city in Pakistan, after Karachi, and ...
, Pakistan * The Edward Bouchet Abdus Salam Institute (EBASI) * Abdus Salam Library at
Imperial College London Imperial College London, also known as Imperial, is a Public university, public research university in London, England. Its history began with Prince Albert of Saxe-Coburg and Gotha, Prince Albert, husband of Queen Victoria, who envisioned a Al ...


See also

* Preon * Unified field theory * W and Z bosons


References


Sources

* * * * * * * * * * * *


External links


Documentary Film on the Science and Life of Dr. Abdus Salam
* * * *
The Abdus Salam International Centre for Theoretical Physics
* including the Nobel Lecture, 8 December 1979 ''Gauge Unification of Fundamental Forces'' * Abdus Salam C




Islam and Science: Concordance or Conflict?
, speech delivered to UNESCO, 27 April 1984.
COMSATS Secretariat
* Biography of Abdus Salam by Imperial College colleagu


An Interesting And Detailed Article On the Life of Dr. Abdus Salam In Urdu


* [https://web.archive.org/web/20070707093148/http://www.imperial.ac.uk/physics/conferences/salam50/ Salam +50 Conference at Imperial College]
Contributions of Professor Abdus Salam as member of PAEC
* , - {{DEFAULTSORT:Salam, Abdus Abdus Salam, 1926 births 1996 deaths Academics of Imperial College London Alumni of St John's College, Cambridge Atoms for Peace Award recipients Fellows of Bangladesh Academy of Sciences Fellows of Pakistan Academy of Sciences Fellows of the Royal Society Institute for Advanced Study visiting scholars Foreign associates of the National Academy of Sciences Foreign members of the USSR Academy of Sciences Foreign members of the Russian Academy of Sciences Foreign fellows of the Indian National Science Academy Founding members of the World Cultural Council Government College University, Lahore alumni Honorary Knights Commander of the Order of the British Empire Maxwell Medal and Prize recipients Members of the Pontifical Academy of Sciences Nobel laureates in Physics Pakistani Ahmadis Pakistani expatriate academics Pakistani expatriates in the United Kingdom Pakistani physicists Pakistani Nobel laureates Pakistani scholars People from Jhang District Project-706 Recipients of the Copley Medal Recipients of the National Order of Scientific Merit (Brazil) Recipients of the Pride of Performance Royal Medal winners Space advocates Space and Upper Atmosphere Research Commission people Theoretical physicists University of the Punjab alumni Science and technology in Pakistan TWAS fellows Administrators of the Space and Upper Atmosphere Research Commission Members of the Pakistan Philosophical Congress Recipients of the Sitara-e-Pakistan Recipients of Nishan-e-Imtiaz Recipients of the Matteucci Medal Members of the American Philosophical Society Neurological disease deaths in England Deaths from progressive supranuclear palsy Members of the Royal Swedish Academy of Sciences Associate fellows of the African Academy of Sciences Fellows of the American Physical Society People from Punjab Province (British India)