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Acta Physica Hungarica A) Heavy Ion Physics

, Volume 19, Issue 3–4, pp 353–364 | Cite as

From wigner’s supermultiplet theory to quantum chromodynamics

  • O. W. Greenberg
Article

Abstract

The breadth of Eugene Wigner’s interests and contributions is amazing and humbling. At different times in his life he did seminal work in areas as diverse as pure mathematics and chemical engineering. His seminal research in physics is, of course, the best known. In this talk I first describe Wigner’s supermultiplet theory of 1936 using the approximate symmetry of the nuclear Hamiltonian under a combined spin-isospin symmetry to describe the spectroscopy of stable nuclei up to about the nucleus molybdenum. I then show how Wigner’s ideas of 1936 have had far reaching and unexpected implications: his ideas led to the discovery of the color degree of freedom for quarks and to the symmetric quark model of baryons which is the basis of baryon spectroscopy. I conclude by pointing out that the color degree of freedom, made into a local symmetry using Yang-Mills theory, leads to the gauge theory of color, quantum chromodynamics, which is our present theory of the strong interactions.

Keywords

quarks internal symmetries color baryons quantum chromodynamics 

PACS

01.65.+g 03.b5.Fd 12.39.Jh 14.20.-c 

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Copyright information

© Akadémiai Kiadó 2004

Authors and Affiliations

  1. 1.Center for Theoretical Physics, Department of PhysicsUniversity of MarylandCollege ParkUSA

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