Effect of quantum correction in the Bose-Hubbard model

Hideki Matsumoto, Kiyoshi Takahashi, Yoji Ohashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Effects of quantum correction in the Bose-Hubbard model at finite temperature are investigated for a homogeneous atomic Bose gas in an optical lattice near its superfluid-insulator transition. Starting from a strong coupling limit, higher order quantum corrections due to the hopping interaction is included in a local approximation (a dynamical mean field approximation) of the non-crossing approximation. When the upper or lower Hubbard band approaches zero energy, there appears a shallow band in the middle of the Hubbard gap due to a strong correlation in the system.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages53-54
Number of pages2
Volume850
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: 2006 Aug 102006 Oct 17

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period06/8/1006/10/17

Fingerprint

approximation
insulators
gases
interactions
temperature
energy

Keywords

  • Bose-Einstein condensation
  • Bose-Hubbard model
  • Strongly correlated particle system
  • Superfluid-insulator transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Matsumoto, H., Takahashi, K., & Ohashi, Y. (2006). Effect of quantum correction in the Bose-Hubbard model. In AIP Conference Proceedings (Vol. 850, pp. 53-54) https://doi.org/10.1063/1.2354603

Effect of quantum correction in the Bose-Hubbard model. / Matsumoto, Hideki; Takahashi, Kiyoshi; Ohashi, Yoji.

AIP Conference Proceedings. Vol. 850 2006. p. 53-54.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Matsumoto, H, Takahashi, K & Ohashi, Y 2006, Effect of quantum correction in the Bose-Hubbard model. in AIP Conference Proceedings. vol. 850, pp. 53-54, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 06/8/10. https://doi.org/10.1063/1.2354603
Matsumoto H, Takahashi K, Ohashi Y. Effect of quantum correction in the Bose-Hubbard model. In AIP Conference Proceedings. Vol. 850. 2006. p. 53-54 https://doi.org/10.1063/1.2354603
Matsumoto, Hideki ; Takahashi, Kiyoshi ; Ohashi, Yoji. / Effect of quantum correction in the Bose-Hubbard model. AIP Conference Proceedings. Vol. 850 2006. pp. 53-54
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