Investigation of phase diagram of hard-core boson model with non-ergodic contributions

Stasyuk, I. V.; Menchyshyn, O.

doi:10.30970/jps.13.4707

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2010

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“…The equation of motion method does not allow us to take into account these terms and because of this we should use the diagrammatic technique. It should be noted that such a peculiarity was also pointed out in [32] at the investigation of the Bose-Hubbard model in the hard-core case.…”

Section: Model and Methodsmentioning

confidence: 54%

Phase diagrams of the Bose–Fermi–Hubbard model at finite temperature

Mysakovych

2010

J. Phys.: Condens. Matter

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The phase transitions at finite temperatures in the systems described by the Bose-Fermi-Hubbard model are investigated in this work in the framework of the self-consistent random phase approximation. The case of the hard-core bosons is considered and the pseudospin formalism is used. The density-density correlator is calculated in the random phase approximation and the possibilities of transitions from superfluid to supersolid phases are investigated. It is shown that the transitions between uniform and charge-ordered phases can be of the second or the first order, depending on the system parameters.

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Section: Model and Methodsmentioning

confidence: 54%

Phase diagrams of the Bose–Fermi–Hubbard model at finite temperature

Mysakovych

2010

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

Investigation of phase diagram of hard-core boson model with non-ergodic contributions

Cited by 1 publication

References 0 publications

Phase diagrams of the Bose–Fermi–Hubbard model at finite temperature

Phase diagrams of the Bose–Fermi–Hubbard model at finite temperature

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