Professor of Physics, Carleton University

Universidad de Granada, Dpto. Física Teórica y del Cosmos & CAFPE, Spain

Professor, University of California at Irvine, Physics & Astronomy Dept.

Professor in Physics & Astronomy, Monash University

Professor of Physics, University of Hawaii

Los Alamos National Laboratory

Professor of Physics, University of Washington

Professor of Physics and Astronomy, University of Minnesota Duluth

Professor of Physics Emeritus, University of Washington

Associate Professor of Physics, Yale University