Photos from the seminar:           Photo1 Photo2 Photo3 Photo4

Johns Hopkins-Princeton Institute for Quantum Matter Seminar
	Unusual vortex states in two-compononent Bose Einstein condensates Monday, April 27, 2009 12 noon The Johns Hopkins University Henry A. Rowland Department of Physics and Astronomy Bloomberg Center Room 475
Presented by: Asle Sudbø Professor of Physics Norwegian University of Science and Technology, Trondheim, Norway
ABSTRACT: A striking property of a single-component superfluid under rotation, is that a broken symmetry in the order parameter results in a broken translational symmetry, a vortex lattice. If translational symmetry is restored, the phase of the order parameter disorders and the broken symmetry in the order parameter is restored. We show that for Bose-Condensate mixtures on optical lattices (which may possess a negative dissipationless intercomponent drag), a new situation arises. A phase disordered nonsuperfluid component can break translational symmetry in response to rotation due to interaction with a superfluid component. This state is a modulated vortex liquid which breaks translational symmetry in the direction transverse to the rotation vector.
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