Polarized states and domain walls in spinor Bose-Einstein condensates

H. E. Nistazakis, D. J. Frantzeskakis, P. G. Kevrekidis, B. A. Malomed, R. Carretero-González, and A. R. Bishop Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784, Greece Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA Department of Interdisciplinary Studies, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel Nonlinear Dynamical Systems Group, Department of Mathematics and Statistics and Computational Science Research Center, San Diego State University, San Diego, California 92182-7720, USA Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA Received 21 June 2007; published 4 December 2007