Paul Wiegmann

Paul B. Wiegmann (Павел Борисович Вигман) is a Russian physicist. He is the Robert W. Reneker Distinguished Service Professor in the Department of Physics at the University of Chicago, James Franck Institute and Enrico Fermi Institute. He specializes in theoretical condensed matter physics. He made pioneering contributions to the field of quantum integrable systems. He found exact solutions of O(3) Non-linear Sigma Model, , Wess–Zumino–Witten model (together with Alexander Polyakov), Anderson impurity model and multi-channel Kondo model (with Alexei Tsvelik). Provided by Wikipedia