Alladi Ramakrishnan
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Alladi Ramakrishnan (9 August 1923 – 7 June 2008) was an Indian physicist and the founder of the Institute of Mathematical Sciences (Matscience) in
Chennai Chennai, also known as Madras (List of renamed places in India#Tamil Nadu, its official name until 1996), is the capital city, capital and List of cities in Tamil Nadu by population, largest city of Tamil Nadu, the southernmost states and ...
. He made contributions to
stochastic process In probability theory and related fields, a stochastic () or random process is a mathematical object usually defined as a family of random variables in a probability space, where the index of the family often has the interpretation of time. Sto ...
,
particle physics Particle physics or high-energy physics is the study of Elementary particle, fundamental particles and fundamental interaction, forces that constitute matter and radiation. The field also studies combinations of elementary particles up to the s ...
, algebra of
matrices Matrix (: matrices or matrixes) or MATRIX may refer to: Science and mathematics * Matrix (mathematics), a rectangular array of numbers, symbols or expressions * Matrix (logic), part of a formula in prenex normal form * Matrix (biology), the ...
,
special theory of relativity In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein's 1905 paper, "On the Electrodynamics of Moving Bodies", the theory is presen ...
and
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 ...
.


Early life

Ramakrishnan was born on 9 August 1923 in
Madras Chennai, also known as Madras ( its official name until 1996), is the capital and largest city of Tamil Nadu, the southernmost state of India. It is located on the Coromandel Coast of the Bay of Bengal. According to the 2011 Indian ce ...
. His father was the lawyer Sir Alladi Krishnaswami Iyer, who, as a member of the Constituent Assembly, was instrumental in drafting the
Constitution of India The Constitution of India is the supreme law of India, legal document of India, and the longest written national constitution in the world. The document lays down the framework that demarcates fundamental political code, structure, procedures ...
with other prominent members. He had his early education in P. S. High School, Madras. He graduated from Presidency College, Madras, with B.Sc. (Hons) degree in physics. As a student of the college he had wanted to work under Sir C. V. Raman. When his father consulted Raman, Raman suggested reading ''Lehrbuch der theoretischen Physik'' by Georg Joos. Ramakrishnan studied the book and developed an interest in
theoretical physics Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict List of natural phenomena, natural phenomena. This is in contrast to experimental p ...
and
special relativity In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between Spacetime, space and time. In Albert Einstein's 1905 paper, Annus Mirabilis papers#Special relativity, "On the Ele ...
in particular.


Career

After completing his studies at Presidency College, Ramakrishnan started working with Homi Bhabha at the
Tata Institute of Fundamental Research Tata Institute of Fundamental Research (TIFR) is a leading research Institute under the Department of Atomic Energy of the Government of India. It is a public deemed university located at Navy Nagar, Colaba in Mumbai. It also has a centres in ...
(TIFR). At TIFR, Bhabha introduced him to Cascade Theory and Fluctuation Problem of Cosmic Radiation. In August 1949, he left for England to work under
M. S. Bartlett Maurice Stevenson Bartlett FRS (18 June 1910 – 8 January 2002) was an English statistician who made particular contributions to the analysis of data with spatial and temporal patterns. He is also known for his work in the theory of statis ...
at the
University of Manchester The University of Manchester is a public university, public research university in Manchester, England. The main campus is south of Manchester city centre, Manchester City Centre on Wilmslow Road, Oxford Road. The University of Manchester is c ...
. Ramakrishnan's work on Product Densities that he did while at TIFR was good enough work for a PhD. But he stayed in Manchester for two more years to complete his residency requirements. His work on Product Densities appeared in the Proceedings of the
Cambridge Philosophical Society The Cambridge Philosophical Society (CPS) is a scientific society at the University of Cambridge. It was founded in 1819. The name derives from the medieval use of the word philosophy to denote any research undertaken outside the fields of law ...
. During the 1950s, he worked on the problem of Fluctuating Density Field, and published a series of eight papers on the subject. During 1957–1958 Ramakrishnan visited the
Institute for Advanced Study The Institute for Advanced Study (IAS) is an independent center for theoretical research and intellectual inquiry located in Princeton, New Jersey. It has served as the academic home of internationally preeminent scholars, including Albert Ein ...
in Princeton. It was the Institute of Advanced Study that inspired him to start a similar institution in India. Ramakrishnan is noted for his work in quantum mechanics on giving a prescription for transition from Pauli to
Dirac matrices In mathematical physics, the gamma matrices, \ \left\\ , also called the Dirac matrices, are a set of conventional matrices with specific anticommutation relations that ensure they generate a matrix representation of the Clifford algebra \ \mathr ...
. He also published several papers giving simple but insightful geometric derivations for the
Lorentz transformations In physics, the Lorentz transformations are a six-parameter family of linear transformations from a coordinate frame in spacetime to another frame that moves at a constant velocity relative to the former. The respective inverse transformation ...
.


Creation of Matscience

After his return to Madras (Chennai) from the Institute for Advanced Study in 1958, Ramakrishnan began a Theoretical Physics Seminar in his family home ''Ekamra Nivas'' (house with a mango tree). In the seminar he presented lectures on the latest advances in theoretical physics to a small group of students, and invited leading scientists from the world to address the students. In 1960, nobel laureate
Niels Bohr Niels Henrik David Bohr (, ; ; 7 October 1885 – 18 November 1962) was a Danish theoretical physicist who made foundational contributions to understanding atomic structure and old quantum theory, quantum theory, for which he received the No ...
visited India and was impressed by the small group of students trained by Ramakrishnan. While in India, Bohr visited Dr. Ramakrishnan's family home, and inspired the creation of an institute for advanced research. With Bohr's recommendation and with support from the then prime minister of India,
Jawaharlal Nehru Jawaharlal Nehru (14 November 1889 – 27 May 1964) was an Indian anti-colonial nationalist, secular humanist, social democrat, and statesman who was a central figure in India during the middle of the 20th century. Nehru was a pr ...
and C.Subramaniam, Alladi Ramakrishan set out to create the institute. Institute of Mathematical Sciences (Matscience) was thus created in 1962 with Ramakrishnan as the director.
Subrahmanyan Chandrasekhar Subrahmanyan Chandrasekhar (; 19 October 1910 – 21 August 1995) was an Indian Americans, Indian-American theoretical physicist who made significant contributions to the scientific knowledge about the structure of stars, stellar evolution and ...
, nobel laureate and professor at
University of Chicago The University of Chicago (UChicago, Chicago, or UChi) is a Private university, private research university in Chicago, Illinois, United States. Its main campus is in the Hyde Park, Chicago, Hyde Park neighborhood on Chicago's South Side, Chic ...
inaugurated the Institute at the Presidency College in the then Madras. Chandrasekhar also agreed to be an Honorary Professor of Astrophysics at the institute and addressed its first students. Ramakrishnan travelled and lectured extensively during his years at Matscience, holding lectures at over 200 centers of learning. He was unusually generous with providing opportunity and leave for his Ph.D. students to travel to centers of learning abroad, firmly believing that this was of benefit to his students and that research was an international activity, even if this brought with it the risk of losing talented students to other institutions. After retiring, Ramakrishnan continued to teach and inspire. In the last decades of his life, several high school students and undergraduates came to his home in Madras to learn with him, subsequently pursuing higher studies in the United States towards a career of research.


Personal life and death

Ramakrishnan was married to Lalitha Ramakrishnan, the daughter of mathematics professor H. Subramani Iyer. His son Krishnaswami Alladi is a professor of mathematics at the
University of Florida The University of Florida (Florida or UF) is a public university, public land-grant university, land-grant research university in Gainesville, Florida, United States. It is a senior member of the State University System of Florida and a preem ...
,
Gainesville, Florida Gainesville is the county seat of Alachua County, Florida, United States, and the most populous city in North Central Florida, with a population of 145,212 in 2022. It is the principal city of the Gainesville metropolitan area, Florida, Gainesv ...
. Ramakrishnan was a connoisseur of
Carnatic music Carnatic music (known as or in the Dravidian languages) is a system of music commonly associated with South India, including the modern Indian states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, Telangana and southern Odisha. It is o ...
and strongly believed that art and science can go hand in hand. He died on 7 June 2008 at his son's home in Gainesville, Florida.


See also

* Institute of Mathematical Sciences


Books

*


References


External links


Interview with Alladi Ramakrishnan

Homepage of Ramakrishnan's son Krishnaswami Alladi
{{DEFAULTSORT:Ramakrishnan, Alladi 1923 births 2008 deaths Presidency College, Chennai alumni 20th-century Indian physicists Indian institute directors American people of Indian Tamil descent University of Madras alumni Scientists from Chennai 20th-century Indian mathematicians American people of Indian descent