Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices
Phase transitions in systems described by Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices are investigated in this work. The case of hard-core bosons is considered and pseudospin formalism is used. Phase diagrams are built in the plain of chemical potential of the bosons-bos...
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| Published in: | Condensed Matter Physics |
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| Date: | 2011 |
| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2011
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/120034 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices/ T.S. Mysakovych // Condensed Matter Physics. — 2011. — Т. 14, № 3. — С. 43301:1-8. — Бібліогр.: 22 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Phase transitions in systems described by Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices are investigated in this work. The case of hard-core bosons is considered and pseudospin formalism is used. Phase diagrams are built in the plain of chemical potential of the bosons-bosonic hopping parameter. It is shown that in the case of anisotropic hopping, the region of the supersolid phase existence is possible for a smaller parameter space.
У цiй роботi дослiджено фазовi переходи у системах, що описуються моделлю Бозе-Фермi-Габбарда на ґратцi з двома нееквiвалентними пiдґратками. Розглянуто випадок жорстких бозонiв та вико-ристано псевдоспiновий формалiзм. Побудовано фазовi дiаграми у площинi хiмiчний потенцiал бозонiв-бозонний параметр перескоку. Показано, що у випадку анiзотропного перескоку область iснування так званої “суперсолiд” фази звужується.
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| ISSN: | 1607-324X |