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In 1973, Gross, working with his first graduate student, Frank Wilczek, at Princeton University, discovered asymptotic freedom, which holds that the closer quarks are to each other, the less the strong interaction (or color chargeIn quantum chromodynamics (QCD), color or color charge refers to a certain property of the subatomic particles called quarks. The idea was introduced to allow three quarks to coexist and still satisfy the Pauli exclusion principle. Quark and antiquark col) between them; when quarks are in extreme proximity, the nuclear force between them is so weak that they behave almost as free particles. Asymptotic freedom, independently discovered by David Politzer, was important for the development of quantum chromodynamicsQuantum chromodynamics (QCD) is the physical theory describing one of the fundamental forces, the strong interaction. Because of its special property called asymptotic freedom, it was first proposed in the early 1970s by David Politzer and by Frank Wilcze.

Gross, with Jeff Harvey, Emil Martinec, and Ryan Rohm also discovered heterotic stringIn physics, a heterotic string is a peculiar mixture (or hybrid) of the bosonic string and the superstring (the adjective heterotic comes from the Greek word heterosis). In string theory, the left-moving and the right-moving excitations almost do not talk.

Gross received his bachelor's degreeA bachelor's degree is usually an undergraduate academic degree awarded for a course that generally lasts three or four years. Note that some postgraduate degrees are entitled Bachelor of. the University of Oxford Bachelor of Civil Law. Honours degrees In and master's degreeA master's degree is an academic degree usually awarded for completion of a postgraduate course of one or two years in duration. In the UK it is sometimes awarded for an undergraduate course whose final year consists of higher-level courses and a major re from the Hebrew University of JerusalemCapitals in Asia For alternate uses see Jerusalem (disambiguation Jerusalem ( Modern Hebrew: Yerushalayim Biblical Hebrew: Arabic: al-Quds see also Names of Jerusalem) is an ancient Middle Eastern city of key importance to the religions of Judaism, Christ, IsraelThis article discusses the State of Israel. For other meanings of Israel see Israel (disambiguation). The State of Israel Medinat Yisrael in Hebrew, Daulat Israil in Arabic) is a country in the Middle East on the eastern edge of the Mediterranean Sea., in 1962. He received his Ph.D. in physics from the University of California, Berkeley in 1966 and was a Junior Fellow at Harvard University and a Professor at Princeton University until 1997. He is the recipient of a MacArthur Foundation Fellowship in 1987, the Dirac Medal in 1988, and currently is the director and holder of the Frederick W. Gluck Chair in Theoretical Physics at the Kavli Institute for Theoretical Physics of the University of California, Santa Barbara.