Published August 2007
| Version v1
Journal article
Semiclassical analysis of the Bogoliubov spectrum in the Bose-Hubbard model
Creators
- 1. Kirensky Institute of Physics, 660036 Krasnoyarsk (Russian Federation)
Description
We analyze the Bogoliubov spectrum of the Bose-Hubbard model with a finite number of sites and Bose particles by using a semiclassical approach. This approach allows us to take into account the finite-size effects responsible for evolution of the Bogoliubov spectrum into an irregular (chaotic) spectrum at higher energies. A manifestation of this transition for the excitation dynamics of the Bose-Hubbard system is discussed as well
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
- Journal Volume
- 76
- Journal Issue
- 2
- Journal Page Range
- p. 026207-026207.11
- ISSN
- 1063-651X
- CODEN
- PLEEE8
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39088600
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- CHAOS THEORY; EVOLUTION; EXCITATION; HUBBARD MODEL; PARTICLES; SEMICLASSICAL APPROXIMATION; SUPERFLUIDITY
- Descriptors DEC
- APPROXIMATIONS; CALCULATION METHODS; CRYSTAL MODELS; ENERGY-LEVEL TRANSITIONS; MATHEMATICAL MODELS; MATHEMATICS
Optional Information
- Notes
- (c) 2007 The American Physical Society