The Vafa–Witten theorem is named after Cumrun Vafa and another person who is a professor at what school?
Vafa–Witten theorem In theoretical physics, the Vafa–Witten theorem, named after Cumrun Vafa and Edward Witten, is a theorem that shows that vector-like global symmetries (those that transform as expected under reflections) such as isospin and baryon number in vector-like gauge theories like QCD cannot be spontanteously broken as long as the theta angle is zero. This theorem can be proved by showing the exponential fall off of the propagator of fermions.
Robert Wald Robert M. Wald ( ; born June 29, 1947 in New York City) is a physicist who specializes in general relativity and the thermodynamics of black holes. He is the son of the mathematician and statistician Abraham Wald. Wald's parents died in a plane crash when he was three years old. He is the author of a graduate textbook, "General Relativity". Wald is a professor at the Enrico Fermi Institute and the University of Chicago. Wald has taught undergraduate courses across a range of physics topics, and has been honored as a particularly effective teacher.