Repozytorium Uniwersytetu Jagiellońskiego

Disordered spinor Bose-Hubbard model

Disordered spinor Bose-Hubbard model

Metadane (Dublin Core)

dc.contributor.author Łącki, Mateusz [SAP14002952] pl
dc.contributor.author Paganelli, Simone pl
dc.contributor.author Ahufinger, Veronica pl
dc.contributor.author Sanpera, Anna pl
dc.contributor.author Zakrzewski, Jakub [SAP11010611] pl
dc.date.accessioned 2015-01-15T08:54:33Z
dc.date.available 2015-01-15T08:54:33Z
dc.date.issued 2011 pl
dc.identifier.issn 1050-2947 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/2549
dc.language eng pl
dc.rights Dodaję tylko opis bibliograficzny *
dc.rights.uri *
dc.title Disordered spinor Bose-Hubbard model pl
dc.type JournalArticle pl
dc.abstract.en We study the zero-temperature phase diagram of the disordered spin-1 Bose-Hubbard model in a two-dimensional square lattice. To this aim, we use a mean-field Gutzwiller ansatz and a probabilistic mean-field perturbation theory. The spin interaction induces two different regimes, corresponding to a ferromagnetic and antiferromagnetic order. In the ferromagnetic case, the introduction of disorder reproduces analogous features of the disordered scalar Bose-Hubbard model, consisting in the formation of a Bose glass phase between Mott insulator lobes. In the antiferromagnetic regime, the phase diagram differs more from the scalar case. Disorder in the chemical potential can lead to the disappearance of Mott insulator lobes with an odd-integer filling factor and, for sufficiently strong spin coupling, to Bose glass of singlets between even-filling Mott insulator lobes. Disorder in the spinor coupling parameter results in the appearance of a Bose glass phase only between the n and the n+1 lobes for n odd. Disorder in the scalar Hubbard interaction inhibits Mott insulator regions for occupation larger than a critical value. pl
dc.subject.en quantum physics pl
dc.subject.en condensed matter - other condensed matter pl
dc.description.volume 83 pl
dc.description.number 1 pl
dc.identifier.doi 10.1103/PhysRevA.83.013605 pl
dc.identifier.eissn 1094-1622 pl
dc.identifier.eissn 1538-4446 pl
dc.title.journal Physical Review. A, Atomic, Molecular, and Optical Physics pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid 013605 pl
dc.pbn.affiliation USOS34758:UJ.WFAI; pl
.pointsMNiSW [2011 A]: 40


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