arXiv:cond-mat/0311382 · Physical Review A

Spontaneous squeezing of a vortex in an optical lattice

J.-P. Martikainen, Henk T. C. Stoof

Published Jul 8, 2004• 11 citations

Abstract

We study the equilibrium states of a vortex in a Bose-Einstein condensate in a one-dimensional optical lattice. We find that quantum effects can be important and that it is even possible for the vortex to be strongly squeezed, which reflects itself in a different quantum-mechanical uncertainty of the vortex position in two orthogonal directions. The latter is observable by measuring the atomic density after an expansion of the Bose-Einstein condensate in the lattice.

DOI: 10.1103/physreva.70.013604

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