Murray Gell-Mann

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Murray Gell-Mann

Murray Gell-Mann lecturing in 2007
Born September 15, 1929 (1929-09-15) (age 78)
Manhattan, New York City, U.S.
Residence United States
Nationality Flag of the United States United States
Field Physicist
Institutions Santa Fe Institute
California Institute of Technology
University of New Mexico
Alma mater Yale University, MIT
Academic advisor   Victor Weisskopf
Notable students   Kenneth G. Wilson
Sidney Coleman
Rod Crewther
James Hartle
Christopher Hill
H. Jay Melosh
Barton Zwiebach
Kenneth Young
Known for Elementary particles
Notable prizes Nobel Prize in Physics (1969)

Murray Gell-Mann (born September 15, 1929) is an American physicist who received the 1969 Nobel Prize in physics for his work on the theory of elementary particles.

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Born on New York's Lower East Side into a family of Jewish immigrants from Czernowitz. [1] Gell-Mann quickly revealed himself as a child prodigy. Propelled by an intense boyhood curiosity and love for nature, he entered Yale at fifteen after graduating valedictorian from the Columbia Grammar and Preparatory School. He was awarded a Nobel Prize in physics in 1969 for his discovery of a system for classifying subatomic particles.

Gell-Mann's work in the 1950s involved recently discovered cosmic ray particles that came to be called kaons and hyperons. Classifying these particles led him to propose a new quantum number called strangeness. Another of Gell-Mann's triumphs is the Gell-Mann–Nishijima formula, which was, initially, a formula from empirical results, but was later explained by the quark model. Gell-Mann and Abraham Pais were involved in explaining many puzzling aspects of the physics of these particles.

In 1961, this led him (and Kazuhiko Nishijima) to introduce a classification of elementary particles called hadrons (also independently proposed by Yuval Ne'eman at around the same time). This scheme is now explained by the quark model. Gell-Mann's own name for the classification scheme was the eightfold way, because of the octets of particles in the classification, and also after the eightfold way of Buddhism — a choice that is reflective of Gell-Mann's wide-ranging interests.[citation needed]

Gell-Mann, and, independently, George Zweig, went on, in 1964, to postulate the existence of quarks, the particles from which the hadrons are composed. The name was coined by Gell-Mann and is a reference to the novel Finnegans Wake, by James Joyce ("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 were soon accepted as the underlying elementary objects in the study of the structure of hadrons. In 1972 he introduced with Harald Fritzsch the quantum number 'color' and later, in a joint paper with Heinrich Leutwyler, the full theory of quantum chromodynamics (QCD) was released. The quark model is part of QCD, and has been robust enough to survive the discovery of other flavours of quarks.

Gell-Mann and Richard Feynman, working together, and a rival group of George Sudarshan and Robert Marshak, were the first to find the structure of the weak interaction in physics. This work followed the seminal discovery of parity violation by Chien-Shiung Wu, as suggested by Chen-Ning Yang and T. D. Lee.

Gell-Mann continued to be active in physics. In the 1990s his interest turned to the emerging study of complexity, where he was closely associated with the Santa Fe Institute. He wrote a popular science book about these matters, The Quark and the Jaguar: Adventures in the Simple and the Complex. The title of the book is taken from a line of an Arthur Sze poem: "The world of the quark has everything to do with a jaguar circling in the night."

George Johnson wrote a major biography of Gell-Mann, which is entitled Strange Beauty: Murray Gell-Mann and the Revolution in 20th-Century Physics.

Murray Gell-Mann is also a collector of East Asian antiquities and a keen linguist.

He earned a bachelor's degree in physics from Yale University in 1948, and a PhD in physics from MIT in 1951.Gell-Mann was a postdoctoral research associate in 1951 and a visiting research professor at University of Illinois at Urbana-Champagin, Illinois from 1952-1953. After serving as Visiting Associate Professor at Columbia University in 1954-55, he became a professor at the University of Chicago before moving to the California Institute of Technology, where he taught from 1955 until 1993.

He is currently the Robert Andrews Millikan Professor of Theoretical Physics Emeritus at Caltech as well as a University Professor in the Physics and Astronomy Department of the University of New Mexico in Albuquerque, New Mexico. He is a member of the editorial board of the Encyclopædia Britannica. In 1984 Gell-Mann co-founded the Santa Fe Institute — a non-profit research institute in Santa Fe, New Mexico — to study complex systems and disseminate the notion of a separate interdisciplinary study of complexity theory.

Murray Gell-Mann and John Seely Brown in 2007
Murray Gell-Mann and John Seely Brown in 2007

Spouse: J. Margaret Dow (m. 1955, d. 1981) and Marcia Southwick (m. 1992) Children: Elizabeth Sarah Gell-Mann (b. 1956), Nicholas Webster Gell-Mann (b. 1963), Nicholas Southwick Levis (b. 1978), stepson


Persondata
NAME Gell-Mann, Murray
ALTERNATIVE NAMES
SHORT DESCRIPTION Physicist
DATE OF BIRTH September 15, 1929
PLACE OF BIRTH Manhattan, New York City, U.S.
DATE OF DEATH
PLACE OF DEATH
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