Phonon-like excitations in the two-state Bose-Hubbard model
The spectrum of phonon-like collective excitations in the system of Bose-atoms in optical lattice (more generally, in the system of quantum particles described by the Bose-Hubbard model) is investigated. Such excitations appear due to displacements of particles with respect to their local equilibriu...
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| Date: | 2015 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2015
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/155265 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Phonon-like excitations in the two-state Bose-Hubbard model / I.V. Stasyuk, O.V. Velychko, O. Vorobyov // Condensed Matter Physics. — 2015. — Т. 18, № 4. — С. 43004: 1–14. — Бібліогр.: 35 назв. — англ. |