Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach
Phase transitions are investigated in the Bose-Fermi-Hubbard model in the mean field and hard-core boson approximations for the case of infinitely small fermion transfer and repulsive on-site boson-fermion interaction. The behavior of the Bose-Einstein condensate order parameter and grand canonical...
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Online Access: | http://dx.doi.org/10.5488/CMP.18.43702 |
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doaj-0a6516be34944745aef048d5afbc4af92020-11-24T23:44:59ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2015-12-011844370210.5488/CMP.18.43702Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach I.V. StasyukV.O. KrasnovPhase transitions are investigated in the Bose-Fermi-Hubbard model in the mean field and hard-core boson approximations for the case of infinitely small fermion transfer and repulsive on-site boson-fermion interaction. The behavior of the Bose-Einstein condensate order parameter and grand canonical potential is analyzed as functions of the chemical potential of bosons at zero temperature. The possibility of change of order of the phase transition to the superfluid phase in the regime of fixed values of the chemical potentials of Bose- and Fermi-particles is established. The relevant phase diagrams are built.http://dx.doi.org/10.5488/CMP.18.43702Bose-Fermi-Hubbard modelhard-core bosonsBose-Einstein condensatephase transitionsphase diagrams |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
I.V. Stasyuk V.O. Krasnov |
spellingShingle |
I.V. Stasyuk V.O. Krasnov Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach Condensed Matter Physics Bose-Fermi-Hubbard model hard-core bosons Bose-Einstein condensate phase transitions phase diagrams |
author_facet |
I.V. Stasyuk V.O. Krasnov |
author_sort |
I.V. Stasyuk |
title |
Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach |
title_short |
Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach |
title_full |
Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach |
title_fullStr |
Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach |
title_full_unstemmed |
Phase transitions in Bose-Fermi-Hubbard model in the heavy fermion limit: Hard-core boson approach |
title_sort |
phase transitions in bose-fermi-hubbard model in the heavy fermion limit: hard-core boson approach |
publisher |
Institute for Condensed Matter Physics |
series |
Condensed Matter Physics |
issn |
1607-324X |
publishDate |
2015-12-01 |
description |
Phase transitions are investigated in the Bose-Fermi-Hubbard model in the mean field and hard-core boson approximations for the case of infinitely small fermion transfer and repulsive on-site boson-fermion interaction. The behavior of the Bose-Einstein condensate order parameter and grand canonical potential is analyzed as functions of the chemical potential of bosons at zero temperature. The possibility of change of order of the phase transition to the superfluid phase in the regime of fixed values of the chemical potentials of Bose- and Fermi-particles is established. The relevant phase diagrams are built. |
topic |
Bose-Fermi-Hubbard model hard-core bosons Bose-Einstein condensate phase transitions phase diagrams |
url |
http://dx.doi.org/10.5488/CMP.18.43702 |
work_keys_str_mv |
AT ivstasyuk phasetransitionsinbosefermihubbardmodelintheheavyfermionlimithardcorebosonapproach AT vokrasnov phasetransitionsinbosefermihubbardmodelintheheavyfermionlimithardcorebosonapproach |
_version_ |
1725497690452656128 |