Phase diagrams of the Bose-Hubbard model at finite temperature
The phase transitions in the Bose-Hubbard model are investigated. A single-particle Green's function is calculated
 in the random phase approximation and the formalism of the Hubbard operators is used. The regions of
 existence of the superfluid and Mott insulator phases are est...
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| Veröffentlicht in: | Condensed Matter Physics |
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| Datum: | 2009 |
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Englisch |
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Інститут фізики конденсованих систем НАН України
2009
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/120322 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Phase diagrams of the Bose-Hubbard model at finite temperature / I.V. Stasyuk, T.S. Mysakovych // Condensed Matter Physics. — 2009. — Т. 12, № 4. — С. 539-546. — Бібліогр.: 15 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862591910802096128 |
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| author | Stasyuk, I.V. Mysakovych, T.S. |
| author_facet | Stasyuk, I.V. Mysakovych, T.S. |
| citation_txt | Phase diagrams of the Bose-Hubbard model at finite temperature / I.V. Stasyuk, T.S. Mysakovych // Condensed Matter Physics. — 2009. — Т. 12, № 4. — С. 539-546. — Бібліогр.: 15 назв. — англ. |
| collection | DSpace DC |
| container_title | Condensed Matter Physics |
| description | The phase transitions in the Bose-Hubbard model are investigated. A single-particle Green's function is calculated
in the random phase approximation and the formalism of the Hubbard operators is used. The regions of
existence of the superfluid and Mott insulator phases are established and the (μ, t) (the chemical potential 
transfer parameter) phase diagrams are built. The effect of temperature change on this transition is analyzed
and the phase diagram in the (T, μ) plane is constructed. The role of thermal activation of the ion hopping is
investigated by taking into account the temperature dependence of the transfer parameter. The reconstruction
of the Mott-insulator lobes due to this effect is analyzed.
Дослiджено фазовi переходи в моделi Бозе-Хаббарда. Одночастинкова функцiя Грiна розрахована в наближеннi хаотичних фаз iз використанням формалiзму операторiв Хаббарда. Встановлено областi iснування надплинної фази та фази моттiвського дiелектрика i побудовано фазовi дiаграми в площинi (; t). Проаналiзовано вплив змiни температури на фазовi переходи та побудовано фазовi дiаграми в площинi (T; ). Дослiджено випадок термiчної активацiї перескоку частинок та проаналiзовано перебудову фазових дiаграм у цьому випадку.
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| first_indexed | 2025-11-27T07:03:47Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-120322 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1607-324X |
| language | English |
| last_indexed | 2025-11-27T07:03:47Z |
| publishDate | 2009 |
| publisher | Інститут фізики конденсованих систем НАН України |
| record_format | dspace |
| spelling | Stasyuk, I.V. Mysakovych, T.S. 2017-06-11T16:16:54Z 2017-06-11T16:16:54Z 2009 Phase diagrams of the Bose-Hubbard model at finite temperature / I.V. Stasyuk, T.S. Mysakovych // Condensed Matter Physics. — 2009. — Т. 12, № 4. — С. 539-546. — Бібліогр.: 15 назв. — англ. 1607-324X PACS: 03.75.Lm, 05.30.Jp DOI:10.5488/CMP.12.4.539 https://nasplib.isofts.kiev.ua/handle/123456789/120322 The phase transitions in the Bose-Hubbard model are investigated. A single-particle Green's function is calculated
 in the random phase approximation and the formalism of the Hubbard operators is used. The regions of
 existence of the superfluid and Mott insulator phases are established and the (μ, t) (the chemical potential 
 transfer parameter) phase diagrams are built. The effect of temperature change on this transition is analyzed
 and the phase diagram in the (T, μ) plane is constructed. The role of thermal activation of the ion hopping is
 investigated by taking into account the temperature dependence of the transfer parameter. The reconstruction
 of the Mott-insulator lobes due to this effect is analyzed. Дослiджено фазовi переходи в моделi Бозе-Хаббарда. Одночастинкова функцiя Грiна розрахована в наближеннi хаотичних фаз iз використанням формалiзму операторiв Хаббарда. Встановлено областi iснування надплинної фази та фази моттiвського дiелектрика i побудовано фазовi дiаграми в площинi (; t). Проаналiзовано вплив змiни температури на фазовi переходи та побудовано фазовi дiаграми в площинi (T; ). Дослiджено випадок термiчної активацiї перескоку частинок та проаналiзовано перебудову фазових дiаграм у цьому випадку. en Інститут фізики конденсованих систем НАН України Condensed Matter Physics Phase diagrams of the Bose-Hubbard model at finite temperature Фазовi дiаграми моделi Бозе-Хаббарда при скiнченнiй температурi Article published earlier |
| spellingShingle | Phase diagrams of the Bose-Hubbard model at finite temperature Stasyuk, I.V. Mysakovych, T.S. |
| title | Phase diagrams of the Bose-Hubbard model at finite temperature |
| title_alt | Фазовi дiаграми моделi Бозе-Хаббарда при скiнченнiй температурi |
| title_full | Phase diagrams of the Bose-Hubbard model at finite temperature |
| title_fullStr | Phase diagrams of the Bose-Hubbard model at finite temperature |
| title_full_unstemmed | Phase diagrams of the Bose-Hubbard model at finite temperature |
| title_short | Phase diagrams of the Bose-Hubbard model at finite temperature |
| title_sort | phase diagrams of the bose-hubbard model at finite temperature |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/120322 |
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