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Murray Gell-Mann (; September 15, 1929 – May 24, 2019) was an American
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 ...
who played a preeminent role in the development of the theory of
elementary particles 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 con ...
. Gell-Mann introduced the concept of
quarks 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 nuclei. All commonly o ...
as the fundamental building blocks of the strongly interacting particles, and the
renormalization group In theoretical physics, the renormalization group (RG) is a formal apparatus that allows systematic investigation of the changes of a physical system as viewed at different scales. In particle physics, it reflects the changes in the underlying p ...
as a foundational element of
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
statistical mechanics In physics, statistical mechanics is a mathematical framework that applies statistical methods and probability theory to large assemblies of microscopic entities. Sometimes called statistical physics or statistical thermodynamics, its applicati ...
. He played key roles in developing the concept of
chirality Chirality () is a property of asymmetry important in several branches of science. The word ''chirality'' is derived from the Greek (''kheir''), "hand", a familiar chiral object. An object or a system is ''chiral'' if it is distinguishable fro ...
in the theory of the
weak interaction In nuclear physics and particle physics, the weak interaction, weak force or the weak nuclear force, is one of the four known fundamental interactions, with the others being electromagnetism, the strong interaction, and gravitation. It is th ...
s and spontaneous
chiral symmetry breaking In particle physics, chiral symmetry breaking generally refers to the dynamical spontaneous breaking of a chiral symmetry associated with massless fermions. This is usually associated with a gauge theory such as quantum chromodynamics, the quant ...
in the
strong interaction In nuclear physics and particle physics, the strong interaction, also called the strong force or strong nuclear force, is one of the four known fundamental interaction, fundamental interactions. It confines Quark, quarks into proton, protons, n ...
s, which controls the physics of the light
meson In particle physics, a meson () is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually one of each, bound together by the strong interaction. Because mesons are composed of quark subparticles, the ...
s. In the 1970s he was a co-inventor of
quantum chromodynamics In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons. Quarks are fundamental particles that make up composite hadrons such as the proton, neutron and pion. QCD is a type of ...
(QCD) which explains the confinement of quarks in mesons and
baryon In particle physics, a baryon is a type of composite particle, composite subatomic particle that contains an odd number of valence quarks, conventionally three. proton, Protons and neutron, neutrons are examples of baryons; because baryons are ...
s and forms a large part of the Standard Model of elementary particles and forces. Murray Gell-Mann received the 1969
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 ...
for his work on the theory of elementary particles.


Life and education

Gell-Mann was born in Lower Manhattan to a family of
Jewish Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
immigrants from the
Austro-Hungarian Empire Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. A military and diplomatic alliance, it consist ...
, specifically from Czernowitz in present-day
Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...
. His parents were Pauline (née Reichstein) and Arthur Isidore Gelman, who taught
English as a second language English as a second or foreign language refers to the use of English by individuals whose native language is different, commonly among students learning to speak and write English. Variably known as English as a foreign language (EFL), Engli ...
. Propelled by an intense boyhood curiosity and love for nature and mathematics, he graduated
valedictorian Valedictorian is an academic title for the class rank, highest-performing student of a graduation, graduating class of an academic institution in the United States. The valedictorian is generally determined by an academic institution's grade poin ...
from the Columbia Grammar & Preparatory School aged 14 and subsequently entered
Yale College Yale College is the undergraduate college of Yale University. Founded in 1701, it is the original school of the university. Although other Yale schools were founded as early as 1810, all of Yale was officially known as Yale College until 1887, ...
as a member of Jonathan Edwards College. At Yale, he participated in the
William Lowell Putnam Mathematical Competition The William Lowell Putnam Mathematical Competition, often abbreviated to Putnam Competition, is an annual list of mathematics competitions, mathematics competition for undergraduate college students enrolled at institutions of higher learning in th ...
and was on the team representing
Yale University Yale University is a Private university, private Ivy League research university in New Haven, Connecticut, United States. Founded in 1701, Yale is the List of Colonial Colleges, third-oldest institution of higher education in the United Stat ...
(along with Murray Gerstenhaber and Henry O. Pollak) that won the second prize in 1947. Gell-Mann graduated from Yale with a bachelor's degree in physics in 1948 and intended to pursue graduate studies in physics. He sought to remain in the
Ivy League The Ivy League is an American collegiate List of NCAA conferences, athletic conference of eight Private university, private Research university, research universities in the Northeastern United States. It participates in the National Collegia ...
for his graduate education and applied to
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 ...
as well as
Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...
. He was rejected by Princeton and accepted by Harvard, but the latter institution was unable to offer him needed financial assistance. He was accepted by the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of moder ...
(MIT) and received a letter from
Victor Weisskopf Victor Frederick "Viki" Weisskopf (also spelled Viktor; September 19, 1908 – April 22, 2002) was an Austrian-born American theoretical physicist. He did postdoctoral work with Werner Heisenberg, Erwin Schrödinger, Wolfgang Pauli, and Niels Boh ...
urging him to attend MIT and become Weisskopf's research assistant. This would provide Gell-Mann with the financial assistance he required. Unaware of MIT's eminent status in physics research, Gell-Mann was "miserable" with the fact that he would not be able to attend Princeton or Harvard and in characteristic dark irony, said he considered suicide. Gell-Mann stated that he realized he could try to first enter MIT and commit suicide afterwards if he found it to be truly terrible. However, he couldn't first choose suicide and then attend MIT; the two "didn't commute", as Gell-Mann said. He received his Ph.D. in physics from MIT in 1951 after completing a doctoral dissertation, titled "Coupling strength and nuclear reactions", under the supervision of Weisskopf. Subsequently, Gell-Mann was a postdoctoral fellow at 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 ...
at Princeton in 1951, and a visiting research professor at the
University of Illinois at Urbana–Champaign The University of Illinois Urbana-Champaign (UIUC, U of I, Illinois, or University of Illinois) is a public land-grant research university in the Champaign–Urbana metropolitan area, Illinois, United States. Established in 1867, it is the f ...
from 1952 to 1953. He was a visiting associate professor at
Columbia University Columbia University in the City of New York, commonly referred to as Columbia University, is a Private university, private Ivy League research university in New York City. Established in 1754 as King's College on the grounds of Trinity Churc ...
and an associate professor at the
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 ...
in 1954–1955, before moving to the
California Institute of Technology The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...
, where he taught from 1955 until he retired in 1993. He was on sabbatical at the ''
Collège de France The (), formerly known as the or as the ''Collège impérial'' founded in 1530 by François I, is a higher education and research establishment () in France. It is located in Paris near La Sorbonne. The has been considered to be France's most ...
'' for the academic year 1958–1959. Gell-Mann married J. Margaret Dow in 1955; they had a daughter and a son. Margaret died in 1981, and in 1992 he married Marcia Southwick, whose son became his stepson. In 2011, Gell-Mann attended an event on
Jeffrey Epstein Jeffrey Edward Epstein ( , ; January 20, 1953August 10, 2019) was an American financier and child sex offender. Born and raised in New York City, Epstein began his professional career as a teacher at the Dalton School, despite lacking a col ...
's private island, Little Saint James, known as the "Mindshift Conference", hosted by Epstein and Al Seckel. Gell-Mann's extensive interests outside of physics included
archaeology Archaeology or archeology is the study of human activity through the recovery and analysis of material culture. The archaeological record consists of Artifact (archaeology), artifacts, architecture, biofact (archaeology), biofacts or ecofacts, ...
,
numismatics Numismatics is the study or collection of currency, including coins, tokens, paper money, medals, and related objects. Specialists, known as numismatists, are often characterized as students or collectors of coins, but the discipline also inclu ...
,
birdwatching Birdwatching, or birding, is the observing of birds, either as a recreational activity or as a form of citizen science. A birdwatcher may observe by using their naked eye, by using a visual enhancement device such as binoculars or a telescop ...
and
linguistics Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
. Along with S. A. Starostin, he established the
Evolution of Human Languages The Evolution of Human Languages (EHL) project is a historical-comparative linguistics research project hosted by the Santa Fe Institute. It aims to provide a detailed genealogical classification of the world's languages. The project was founded ...
project at the
Santa Fe Institute The Santa Fe Institute (SFI) is an independent, nonprofit theoretical research institute located in Santa Fe, New Mexico, United States and dedicated to the multidisciplinary study of the fundamental principles of complex adaptive systems, inc ...
. As a
humanist Humanism is a philosophical stance that emphasizes the individual and social potential, and agency of human beings, whom it considers the starting point for serious moral and philosophical inquiry. The meaning of the term "humanism" ha ...
and an agnostic, Gell-Mann was a Humanist Laureate in the International Academy of Humanism. Novelist
Cormac McCarthy Cormac McCarthy (born Charles Joseph McCarthy Jr.; July 20, 1933 – June 13, 2023) was an American author who wrote twelve novels, two plays, five screenplays, and three short stories, spanning the Western, post-apocalyptic, and Southern Got ...
saw Gell-Mann as a polymath who "knew more things about more things than anyone I've ever met...losing Murray is like losing the ''
Encyclopædia Britannica The is a general knowledge, general-knowledge English-language encyclopaedia. It has been published by Encyclopædia Britannica, Inc. since 1768, although the company has changed ownership seven times. The 2010 version of the 15th edition, ...
''." Gell-Mann died on May 24, 2019, at his home in Santa Fe, New Mexico.


Professional life

Gell-Mann was the Robert Andrews Millikan Professor of Theoretical Physics Emeritus at
California Institute of Technology The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...
as well as a university professor in the physics and astronomy department of the
University of New Mexico The University of New Mexico (UNM; ) is a public research university in Albuquerque, New Mexico, United States. Founded in 1889 by the New Mexico Territorial Legislature, it is the state's second oldest university, a flagship university in th ...
in
Albuquerque, New Mexico Albuquerque ( ; ), also known as ABQ, Burque, the Duke City, and in the past 'the Q', is the List of municipalities in New Mexico, most populous city in the U.S. state of New Mexico, and the county seat of Bernalillo County, New Mexico, Bernal ...
, and the Presidential Professor of Physics and Medicine at the
University of Southern California The University of Southern California (USC, SC, or Southern Cal) is a Private university, private research university in Los Angeles, California, United States. Founded in 1880 by Robert M. Widney, it is the oldest private research university in ...
. He was a member of the editorial board of the ''
Encyclopædia Britannica The is a general knowledge, general-knowledge English-language encyclopaedia. It has been published by Encyclopædia Britannica, Inc. since 1768, although the company has changed ownership seven times. The 2010 version of the 15th edition, ...
''. Gell-Mann spent several periods 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 ...
, a nuclear research facility in Switzerland, among others as a
John Simon Guggenheim Memorial Foundation The John Simon Guggenheim Memorial Foundation is a private foundation formed in 1925 by Olga and Simon Guggenheim in memory of their son, who died on April 26, 1922. The organization awards Guggenheim Fellowship Guggenheim Fellowships are Gr ...
fellow in 1972. In 1984 Gell-Mann was one of several co-founders of the
Santa Fe Institute The Santa Fe Institute (SFI) is an independent, nonprofit theoretical research institute located in Santa Fe, New Mexico, United States and dedicated to the multidisciplinary study of the fundamental principles of complex adaptive systems, inc ...
—a non-profit theoretical research institute in
Santa Fe, New Mexico Santa Fe ( ; , literal translation, lit. "Holy Faith") is the capital city, capital of the U.S. state of New Mexico, and the county seat of Santa Fe County. With over 89,000 residents, Santa Fe is the List of municipalities in New Mexico, fourt ...
intended to study various aspects of a
complex system A complex system is a system composed of many components that may interact with one another. Examples of complex systems are Earth's global climate, organisms, the human brain, infrastructure such as power grid, transportation or communication sy ...
and disseminate the notion of a separate interdisciplinary study of
complexity Complexity characterizes the behavior of a system or model whose components interact in multiple ways and follow local rules, leading to non-linearity, randomness, collective dynamics, hierarchy, and emergence. The term is generally used to c ...
theory. He wrote a popular science book about physics and complexity science, ''The Quark and the Jaguar: Adventures in the Simple and the Complex'' (1994). The title of the book is taken from a line of a poem by Arthur Sze: "The world of the quark has everything to do with a jaguar circling in the night". The author George Johnson has written a
biography A biography, or simply bio, is a detailed description of a person's life. It involves more than just basic facts like education, work, relationships, and death; it portrays a person's experience of these life events. Unlike a profile or curri ...
of Gell-Mann, ''Strange Beauty: Murray Gell-Mann, and the Revolution in 20th-Century Physics'' (1999), which was shortlisted for the Royal Society Book Prize. Although Gell-Mann himself criticized ''Strange Beauty'' for some inaccuracies, with one interviewer reporting him wincing at the mention of it, the book was acclaimed by a number of his colleagues. A revised second edition was published in 2023 by the Santa Fe Institute Press with a foreword by
Douglas Hofstadter Douglas Richard Hofstadter (born 15 February 1945) is an American cognitive and computer scientist whose research includes concepts such as the sense of self in relation to the external world, consciousness, analogy-making, Strange loop, strange ...
. In 2012 Gell-Mann and his companion Mary McFadden published the book ''Mary McFadden: A Lifetime of Design, Collecting, and Adventure''.


Scientific contributions

In 1958, Gell-Mann in collaboration with
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 ...
, in parallel with the independent team of E. C. George Sudarshan and Robert Marshak, discovered the
chiral Chirality () is a property of asymmetry important in several branches of science. The word ''chirality'' is derived from the Greek language, Greek (''kheir''), "hand", a familiar chiral object. An object or a system is ''chiral'' if it is dist ...
structures of the
weak interaction In nuclear physics and particle physics, the weak interaction, weak force or the weak nuclear force, is one of the four known fundamental interactions, with the others being electromagnetism, the strong interaction, and gravitation. It is th ...
of physics and developed the V-A theory (vector minus axial vector theory). This work followed the experimental discovery of the violation of parity by
Chien-Shiung Wu Chien-Shiung Wu ( zh, t=吳健雄, p=Wú Jiànxióng, w=Wu2 Chien4-Hsiung2; May 31, 1912 – February 16, 1997) was a Chinese-American particle physics, particle and experimental physicist who made significant contributions in the fields of nucle ...
, as suggested theoretically by Chen-Ning Yang and Tsung-Dao Lee. Gell-Mann's work in the 1950s involved recently discovered
cosmic ray Cosmic rays or astroparticles are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the ...
particles that came to be called
kaon In particle physics, a kaon, also called a K meson and denoted , is any of a group of four mesons distinguished by a quantum number called strangeness. In the quark model they are understood to be bound states of a strange quark (or antiquark ...
s and hyperons. Classifying these particles led him to propose that a
quantum number In quantum physics and chemistry, quantum numbers are quantities that characterize the possible states of the system. To fully specify the state of the electron in a hydrogen atom, four quantum numbers are needed. The traditional set of quantu ...
, called
strangeness In particle physics, strangeness (symbol ''S'') is a property of particles, expressed as a quantum number, for describing decay of particles in strong and electromagnetic interactions that occur in a short period of time. The strangeness of a ...
, would be conserved by the
strong Strong may refer to: Education * The Strong, an educational institution in Rochester, New York, United States * Strong Hall (Lawrence, Kansas), an administrative hall of the University of Kansas * Strong School, New Haven, Connecticut, United ...
and the
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 ...
interactions, but not by the weak interaction. Another of Gell-Mann's ideas is the Gell-Mann–Okubo formula, which was, initially, a formula based on empirical results, but was later explained by his
quark model In particle physics, the quark model is a classification scheme for hadrons in terms of their valence quarks—the quarks and antiquarks that give rise to the quantum numbers of the hadrons. The quark model underlies "flavor SU(3)", or the Eig ...
. Gell-Mann and Abraham Pais were involved in explaining this puzzling aspect of the neutral kaon mixing. Murray Gell-Mann's fortunate encounter with mathematician
Richard Earl Block Richard Earl Block (born 1931) is a mathematician at the University of California, Riverside who works on Lie algebras over fields of prime characteristic. Block earned his Ph.D. from the University of Chicago in 1956 under the supervision of ...
at Caltech, in the fall of 1960, "enlightened" him to introduce a novel classification scheme, in 1961, for
hadron In particle physics, a hadron is a composite subatomic particle made of two or more quarks held together by the strong nuclear force. Pronounced , the name is derived . They are analogous to molecules, which are held together by the electri ...
s. A similar scheme had been independently proposed by Yuval Ne'eman, and has come to be explained by the quark model. Gell-Mann referred to the scheme as the '' eightfold way'', because of the ''octets'' of particles in the classification (the term is a reference to the Eightfold Path of
Buddhism Buddhism, also known as Buddhadharma and Dharmavinaya, is an Indian religion and List of philosophies, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha, a wandering teacher who lived in the 6th or ...
). Gell-Mann, along with Maurice Lévy, developed the sigma model of
pion In particle physics, a pion (, ) or pi meson, denoted with the Greek alphabet, Greek letter pi (letter), pi (), is any of three subatomic particles: , , and . Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the ...
s, which describes low-energy pion interactions. In 1964, Gell-Mann and, independently,
George Zweig George Zweig (; born May 30, 1937) is an American physicist of Russian-Jewish origin. He was trained as a particle physicist under Richard Feynman. He introduced, independently of Murray Gell-Mann, the quark model (although he named it "aces"). ...
went on to postulate the existence of
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, particles which make up the
hadron In particle physics, a hadron is a composite subatomic particle made of two or more quarks held together by the strong nuclear force. Pronounced , the name is derived . They are analogous to molecules, which are held together by the electri ...
s of this scheme. The name "quark" was coined by Gell-Mann, and is a reference to the novel ''
Finnegans Wake ''Finnegans Wake'' is a novel by Irish literature, Irish writer James Joyce. It was published in instalments starting in 1924, under the title "fragments from ''Work in Progress''". The final title was only revealed when the book was publishe ...
'', by
James Joyce James Augustine Aloysius Joyce (born James Augusta Joyce; 2 February 1882 – 13 January 1941) was an Irish novelist, poet, and literary critic. He contributed to the modernist avant-garde movement and is regarded as one of the most influentia ...
("Three quarks for Muster Mark!" book 2, episode 4). Zweig had referred to the particles as "aces", but Gell-Mann's name caught on. Quarks, antiquarks, and
gluon A gluon ( ) is a type of Massless particle, massless elementary particle that mediates the strong interaction between quarks, acting as the exchange particle for the interaction. Gluons are massless vector bosons, thereby having a Spin (physi ...
s were soon established as the underlying elementary objects in the study of the structure of hadrons. He was awarded a
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 ...
in 1969 for his contributions and discoveries concerning the classification of elementary particles and their interactions. In the 1960s, he introduced current algebra as a method of systematically exploiting symmetries to extract predictions from quark models, in the absence of reliable dynamical theory. This method led to model-independent sum rules confirmed by experiment, and provided starting points underpinning the development 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 ...
(SM), the widely accepted theory of elementary particles. In 1972 Gell-Mann, while on sabbatical leave to CERN, together with Harald Fritzsch, Heinrich Leutwyler and William A. Bardeen, considered a Yang-Mills theory of "quark color," and coined the term
quantum chromodynamics In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons. Quarks are fundamental particles that make up composite hadrons such as the proton, neutron and pion. QCD is a type of ...
(QCD) as the
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 ...
of the strong interaction. The
quark model In particle physics, the quark model is a classification scheme for hadrons in terms of their valence quarks—the quarks and antiquarks that give rise to the quantum numbers of the hadrons. The quark model underlies "flavor SU(3)", or the Eig ...
is a part of QCD, and it has been robust enough to accommodate in a natural fashion the discovery of new "
flavors Flavour or flavor is either the sensory perception of taste or smell, or a flavoring in food that produces such perception. Flavour or flavor may also refer to: Science * Flavors (programming language), an early object-oriented extension to L ...
" of quarks, which has superseded the eightfold way scheme. Gell-Mann was responsible, with Pierre Ramond and Richard Slansky,M. Gell-Mann, P. Ramond and R. Slansky, in ''Supergravity'', ed. by D. Freedman and P. Van Nieuwenhuizen, North Holland, Amsterdam (1979), pp. 315–321. and independently of Peter Minkowski, Rabindra Mohapatra, Goran Senjanović, Sheldon Glashow, and Tsutomu Yanagida, for proposing the seesaw theory of neutrino masses. This produces masses at the large scale in any theory with a right-handed neutrino. He is also known to have played a role in keeping
string theory In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. String theory describes how these strings propagate through space and intera ...
alive through the 1970s and early 1980s, supporting that line of research at a time when it was a topic of niche interest. Gell-Mann was a proponent of the consistent histories approach to understanding quantum mechanics, which he advocated in papers with
James Hartle James Burkett Hartle (August 17, 1939 – May 17, 2023) was an American theoretical physicist. He joined the faculty of the University of California, Santa Barbara in 1966, and was a member of the external faculty of the Santa Fe Institute. Hart ...
.


Awards and honors

Gell-Mann won numerous awards and honours including the following: * 1959 –
Dannie Heineman Prize for Mathematical Physics Dannie Heineman Prize for Mathematical Physics is an award given each year since 1959 jointly by the American Physical Society and American Institute of Physics. It is established by the Heineman Foundation in honour of Dannie Heineman. As of 201 ...
* 1960 – Elected member of the
National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the ...
* 1962 –
American Academy of Achievement The American Academy of Achievement, colloquially known as the Academy of Achievement, is a nonprofit educational organization that recognizes some of the highest-achieving people in diverse fields and gives them the opportunity to meet one ano ...
's Golden Plate Award * 1964 – Elected member of the
American Academy of Arts and Sciences The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and other ...
* 1966 – Ernest Orlando Lawrence Award * 1967 –
Franklin Medal The Franklin Medal was a science award presented from 1915 until 1997 by the Franklin Institute located in Philadelphia, Pennsylvania, U.S. The United States of America (USA), also known as the United States (U.S.) or America, is a country ...
* 1968 –
National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the ...
John J. Carty Award * 1969 – Research Corporation Award * 1969 –
Nobel Prize The Nobel Prizes ( ; ; ) are awards administered by the Nobel Foundation and granted in accordance with the principle of "for the greatest benefit to humankind". The prizes were first awarded in 1901, marking the fifth anniversary of Alfred N ...
in Physics * 1978 – Elected a Foreign Member of the Royal Society (ForMemRS) * 1988 –
United Nations Environment Programme The United Nations Environment Programme (UNEP) is responsible for coordinating responses to environmental issues within the United Nations system. It was established by Maurice Strong, its first director, after the Declaration of the United Nati ...
Roll of Honor for Environmental Achievement (The Global 500) * 1993 – Elected member of The American Philosophical Society * 2005 – Albert Einstein Medal * 2005 –
American Humanist Association The American Humanist Association (AHA) is a 501(c) organization, non-profit organization in the United States that advances secular humanism. The American Humanist Association was founded in 1941 and currently provides legal assistance to defe ...
– Humanist of the Year * 2014 – Helmholtz-Medal of the Berlin-Brandenburg Academy of Sciences and Humanities Press Release, 10–2014, from Berlin-Brandenburgische Akademie der Wissenschaften
Retrieved February 15, 2017
Universities that gave Gell-Mann
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 ...
s include
Cambridge Cambridge ( ) is a List of cities in the United Kingdom, city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambridgeshire and is located on the River Cam, north of London. As of the 2021 Unit ...
, Columbia, the
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 ...
,
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 ...
and
Yale Yale University is a private Ivy League research university in New Haven, Connecticut, United States. Founded in 1701, Yale is the third-oldest institution of higher education in the United States, and one of the nine colonial colleges ch ...
.


See also

*
Complex adaptive system A complex adaptive system (CAS) is a system that is ''complex'' in that it is a dynamic network of interactions, but the behavior of the ensemble may not be predictable according to the behavior of the components. It is '' adaptive'' in that the ...
* Gell-Mann amnesia effect *
Kaon In particle physics, a kaon, also called a K meson and denoted , is any of a group of four mesons distinguished by a quantum number called strangeness. In the quark model they are understood to be bound states of a strange quark (or antiquark ...
* Non-linear sigma model *
Omega baryon Omega baryons (often called simply omega particles) are a family of subatomic hadrons which are represented by the symbol and are either charge neutral or have a +2, +1 or −1 elementary charge. Additionally, they contain no up or down qu ...
*
Pseudoscalar meson In high-energy physics, a pseudoscalar meson is a meson with total spin 0 and odd parity (usually notated as Pseudoscalar mesons are commonly seen in proton–proton scattering and proton–antiproton annihilation, and include the pion ( ...
* Random phase approximation * List of Jewish Nobel laureates


Notes


References


Further reading


''Encyclopædia Britannica'' biography of Murray Gell-Mann
* *
Murray Gell-Mann tells his life story at Web of Stories
*

*



* Interview of Murray Gell-Mann by Lillian Hoddeson on 1982 July 27, Niels Bohr Library & Archives, American Institute of Physics, College Park, MD USA
www.aip.org/history-programs/niels-bohr-library/oral-histories/32880
Retrieved 2023-06-20. * Interview of Murray Gell-Mann by Finn Aaserud on 1987 April 23, Niels Bohr Library & Archives, American Institute of Physics, College Park, MD USA
www.aip.org/history-programs/niels-bohr-library/oral-histories/31110
Retrieved 2023-06-20. * Interview of Murray Gell-Mann by Dan Ford on 2017 January 15, Audio and video interviews about the life and work of Richard Garwin, 2004-2012 Niels Bohr Library & Archives, American Institute of Physics, College Park, MD USA
www.aip.org/history-programs/niels-bohr-library/oral-histories/40912-9
Retrieved 2023-06-20.


External links

* * *
"Beauty, truth and ... physics?" (TED2007)
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"The ancestor of language" (TED2007)

Murray Gell-Mann Video Interview with the Academy of Achievement
in 1990
Murray Gell-Mann talks quarks (Video)

Membership
at the
Council on Foreign Relations The Council on Foreign Relations (CFR) is an American think tank focused on Foreign policy of the United States, U.S. foreign policy and international relations. Founded in 1921, it is an independent and nonpartisan 501(c)(3) nonprofit organi ...
* {{DEFAULTSORT:Gell-Mann, Murray 1929 births 2019 deaths Nobel laureates in Physics American Nobel laureates Albert Einstein Medal recipients American agnostics American humanists American people of Austrian-Jewish descent American people of Romanian-Jewish descent 21st-century American physicists Jewish American physicists California Institute of Technology faculty Complex systems scientists Fellows of Pakistan Academy of Sciences Fellows of the American Physical Society Institute for Advanced Study visiting scholars Columbia University faculty Foreign members of the Royal Society Foreign members of the Russian Academy of Sciences Foreign fellows of the Indian National Science Academy Jewish agnostics Jewish humanists Members of the United States National Academy of Sciences American particle physicists Scientists from Manhattan People from Santa Fe, New Mexico American systems scientists American theoretical physicists Wesleyan University people Yale College alumni Members of JASON (advisory group) People associated with CERN Santa Fe Institute people Fellows of the American Academy of Arts and Sciences Columbia Grammar & Preparatory School alumni Massachusetts Institute of Technology School of Science alumni Long-range comparative linguists University of New Mexico faculty Members of the American Philosophical Society Recipients of Franklin Medal