Sheldon Goldstein is a professor of mathematics, physics, and philosophy at Rutgers University. He studies the very foundations of quantum theory, probability theory and statistical mechanics. He has explored the origin of the arrow of time from fundamental physical laws that have no such arrow, and in particular why physical systems tend to approach equilibrium. He is particularly concerned with the proper formulation of quantum theory as a physical theory, describing the behavior of structures in space and time. A major concern is quantum nonlocality—that two distant particles can interact despite the lack of contact—and its compatibility with the theory of relativity. He is a co-author, with Detlef Dürr and Nino Zanghi, of Quantum Physics Without Quantum Philosophy, which explains quantum interference and randomness without invoking quantum magic.