Clare Hall has a strong tradition in theoretical physics. Brian Pippard, its first President, was Cavendish Professor of Physics. Notable current fellows include Michael Green, former Lucasian Professor of Mathematics; John D. Barrow, a Templeton Prize laureate; and Stephen Toope, Vice-Chancellor of the University from 2017. Notable past fellows include David J. Thouless, winner of a 2016 Nobel Prize in Physics; Ivar Giaever, winner of a 1973 Nobel Prize in Physics; Stephen Adler, permanent faculty at the Institute for Advanced Study; Michael R. Douglas of Stony Brook University; J. David Jackson of the University of California, Berkeley. Other American academics who were past fellows include Andreas Acrivos (fluid dynamics) of Stanford, Leila Ahmed (divinity) of Harvard, David Epel (marine biology) of Stanford.