Oscar W. Greenberg

Oscar Wallace Greenberg ( born February 18, 1932 in New York City ) is an American physicist known for introducing the color charge. It deals with elementary particle physics and quantum field theory.

Greenberg graduated from Rutgers University with a bachelor's degree in 1952 and from Princeton University with a master's degree in 1954 and his doctorate in 1957. 1956/57, he was instructor at Brandeis University, from 1957 to 1959 as a second lieutenant in the Air Force Cambridge Research Center and from 1959 to 1961 as a post-doctoral researcher at the Massachusetts Institute of Technology. In 1961 he was Assistant Professor, Associate Professor in 1963 and 1967, Professor at the University of Maryland.

It was 1964/65 at the Institute for Advanced Study, and a visiting professor at Rockefeller University (1965 /66), at the Weizmann Institute (1968 /69), at Johns Hopkins University (1977 /78) and a visiting scientist at the Goddard Space Flight Center NASA (1977 /78), at Fermilab (1984 /85) and Enrico Fermi Institute of the University of Chicago and at the Dublin Institute for Advanced Studies (2006 /7).

Greenberg led the color charge 1964, soon after the postulation of quarks to explain why they can exist in some hadrons ( with otherwise identical quantum states ), without fermions as to violate the Pauli principle.

He is a Fellow of the American Physical Society. 1964 to 1966 he was a Sloan Fellow and in 1968/69 Guggenheim Fellow. In 1971 he received the Physics Prize of the Washington Academy of Sciences.

He is married to Pearl Katz since 1999 and has three sons.

Writings

• Spin and Unitary - Spin Independence in a para- quark model of baryons and mesons, Phys. Rev. Lett., Volume 13, 1964, p 598-602
• CPT Violation Implies Violation Of Lorentz Invariance, Phys. Rev. Lett., Volume 89, 2002, pp. 231602-1