Quantum Monte Carlo simulations for the Bose-Hubbard model with random chemical potential; localized Bose-Einstein condensation without superfluidity

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dc.creatorTsukamoto, Mitsuaki
dc.creatorTsubota, Makoto
dc.date2009-03-14
dc.date.accessioned2026-07-07T12:52:42Z
dc.date.available2026-07-07T12:52:42Z
dc.descriptionThe hardcore-Bose-Hubbard model with random chemical potential is investigated using quantum Monte Carlo simulation. We consider two cases of random distribution of the chemical potential: a uniformly random distribution and a correlated distribution. The temperature dependences of the superfluid density, the specific heat, and the correlation functions are calculated. If the distribution of the randomness is correlated, there exists an intermediate state, which can be thought of as a localized condensate state of bosons, between the superfluid state and the normal state.
dc.description4 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0903.2537
dc.identifierhttp://arxiv.org/abs/0903.2537
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223381
dc.subjectStatistical Mechanics
dc.titleQuantum Monte Carlo simulations for the Bose-Hubbard model with random chemical potential; localized Bose-Einstein condensation without superfluidity
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