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16-02E

16-02E


By Velychko - Posted on 07 April 2016

UDC: 
538.945
PACS: 
71.10.Fd, 71.38

Phase transitions in the hard-core Bose-Fermi-Hubbard model at non-zero temperatures in the heavy-fermion limit

I.V. Stasyuk
V.O. Krasnov

The phase transitions in the ultracold Bose- and Fermi-particles mixture in optical lattices using the Bose-Fermi-Hubbard model in the mean field and hard-core boson approximations are investigated. The case of infinitely small fermion transfer and the repulsive on-site boson-fermion interaction is considered. The behavior of the BE condensate order parameter and grand canonical potential as functions of the chemical potentials of particles at non-zero temperatures is analyzed. 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.

Year: 
2016
Pages: 
30
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