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19 April 2024

» pubmed » pmid17930414

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Transition from a two-dimensional superfluid to a one-dimensional mott insulator
Sara Bergkvist ; Anders Rosengren ; Robert Saers ; Emil Lundh ; Magnus Rehn ; Anders Kastberg ;
Date:	14 Sep 2007
Journal:	Phys Rev Lett, 99 (11), 110401
Abstract:	A two-dimensional system of atoms in an anisotropic optical lattice is studied theoretically. If the system is finite in one direction, it is shown to exhibit a transition between a two-dimensional superfluid and a one-dimensional Mott insulating chain of superfluid tubes. Monte Carlo simulations are consistent with the expectation that the phase transition is of Kosterlitz-Thouless type. The effect of the transition on experimental time-of-flight images is discussed.
Source:	PubMed, pmid17930414
Other source:	[GID 1034944] cond-mat/0701616
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