Professor of Theoretical Physics, Radboud University Nijmegen

Professor of Physics, University of California at Berkeley

Professor for Theoretical Physics, Clausthal University of Technology

University of Maryland

Professor Emeritus, University of California San Diego

Professor of Physics and Astronomy, Rutgers University

University of Texas Austin, Indiana University, NRC Canada, U of Toronto

Sapienza Università di Roma

Eastern Institute of Technology, Ningbo, China

University of Washington