Spectral Properties of the Bose-Hubbard Model Within the Cluster Perturbation Theory in X-Operators Representation View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2017-01

AUTHORS

Kirill Kudashkin, Sergey Nikolaev, Sergey Ovchinnikov

ABSTRACT

We study the two-dimensional ultracold Bose gas in optical lattice. We use cluster perturbation theory based on Hubbard X-operators to calculate the spectral function and phase diagram of Bose-Hubbard model which is minimal model to describe behavior of ultracold gases in optical lattices. We have analyzed spectral properties of spinless bosons in a square lattice taking into account the short-range correlation. More... »

PAGES

103-107

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10948-016-3781-y

DOI

http://dx.doi.org/10.1007/s10948-016-3781-y

DIMENSIONS

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