Quantum phase transition of condensed bosons in optical lattices
arXiv:cond-mat/0403571 · doi:10.1103/PhysRevA.68.043605
Abstract
In this paper we study the superfluid-Mott-insulator phase transition of ultracold dilute gas of bosonic atoms in an optical lattice by means of Green function method and Bogliubov transformation as well. The superfluid- Mott-insulator phase transition condition is determined by the energy-band structure with an obvious interpretation of the transition mechanism. Moreover the superfluid phase is explained explicitly from the energy spectrum derived in terms of Bogliubov approach.
13 pages, 1 figures
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Cited by in corpus (8)
- Mott-Hubbard Transition of Bosons in Optical Lattices with Three-body Interactions
- Phase diagram of two-species Bose-Einstein condensates in an optical lattice
- Atom-Pair Tunneling and Quantum Phase Transition in Strong Interaction Regime
- Interacting bosons in an optical lattice
- Bose - Einstein Condensate Superfluid-Mott Insulator Transition in an Optical Lattice
- Interacting bosons in an optical lattice: Bose-Einstein condensates and Mott insulator
- Superfluidity of spin-1 bosons in optical lattices
- Controllable Persistent Atom Current of Bose-Einstein Condensates in an Optical Lattice Ring