The Center for the Fundamental Laws of nature is the high-energy theory group in Harvard's Physics Department. As of January 2020[update], it had 12 faculty and affiliate faculty, 18 postdoctoral, and 19 graduate student members, in addition to multiple affiliates, visiting scholars, and staff.[4][5] A number of prominent particle theorists have earned degrees or worked at Harvard, including Nobel Laureates David Politzer (PhD 1974), Sheldon Glashow (PhD 1959), David Gross, Steven Weinberg, and Julian Schwinger.[6]