2 1 Se p 20 07 Non-Equilibrium Dynamics and Superfluid Ring Excitations in Binary Bose-Einstein Condensates

K. M. Mertes, ∗ J. W. Merrill, † R. Carretero-González, D. J. Frantzeskakis, P. G. Kevrekidis, and D. S. Hall Department of Physics, Amherst College, Amherst, Massachusetts 01002–5000, USA Nonlinear Dynamical Systems Group, Department of Mathematics and Statistics, and Computational Science Research Center, San Diego State University, San Diego CA, 92182-7720, USA Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 157 84, Greece Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA (Dated: To appear in Phys. Rev. Lett., 2007)