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Mott-insulator phase of coupled 1D atomic gases in a 2D optical lattice

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arxiv cond-mat/0408437 v1 pith:UPF2LZZD submitted 2004-08-19 cond-mat.mes-hall cond-mat.stat-mech

Mott-insulator phase of coupled 1D atomic gases in a 2D optical lattice

classification cond-mat.mes-hall cond-mat.stat-mech
keywords coupledgaseslatticephaseregimetubesalongarray
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We discuss the 2D Mott insulator (MI) state of a 2D array of coupled finite size 1D Bose gases. It is shown that the momentum distribution in the lattice plane is very sensitive to the interaction regime in the 1D tubes. In particular, we find that the disappearance of the interference pattern in time of flight experiments will not be a signature of the MI phase, but a clear consequence of the strongly interacting Tonks-Girardeau regime along the tubes.

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