Superfluid to Mott-insulator transition in an anizotropic two--dimensional optical lattice

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dc.creatorPolak, T. P.
dc.creatorKopec, T. K.
dc.date2009-02-10
dc.date.accessioned2026-07-07T12:39:51Z
dc.date.available2026-07-07T12:39:51Z
dc.descriptionWe study the superfluid to Mott-insulator transition of bosons in an optical anizotropic lattice by employing the Bose-Hubbard model living on a two-dimensional lattice with anizotropy parameter $κ$. The compressible superfluid state and incompressible Mott-insulator (MI) lobes are efficiently described analytically, using the quantum U(1) rotor approach. The ground state phase diagram showing the evolution of the MI lobes is quantified for arbitrary values of $κ$, corresponding to various kind of lattices: from square, through rectangular to almost one-dimensional.
dc.description8 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0902.1625
dc.identifierhttp://arxiv.org/abs/0902.1625
dc.identifierAnn. Phys. (Berlin) 17 No. 12, p. 947-954 (2008)
dc.identifierdoi:10.1002/andp.200810328
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219265
dc.subjectOther Condensed Matter
dc.titleSuperfluid to Mott-insulator transition in an anizotropic two--dimensional optical lattice
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