Abstract

We present the zero-temperature phase diagram of bosonic atoms in an optical lattice, using two different mean-field approaches. The phase diagram consists of various insulating phases and a superfluid phase. We explore the nature of the insulating phase by calculating both the quasiparticle abn quasihole dispersion relation. We also determine the parameters of our single band Bose-Hubbard model in terms of the microscopic parameters of the atoms in the optical lattice

Keywords

Optical latticePhase diagramCondensed matter physicsQuasiparticleSuperfluidityPhysicsLattice (music)Quantum phasesBose–Hubbard modelHubbard modelDispersion relationQuantumQuantum mechanicsQuantum phase transitionPhase (matter)Phase transitionSuperconductivity

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Publication Info

Year
2001
Type
article
Volume
63
Issue
5
Citations
509
Access
Closed

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D. van Oosten, P. van der Straten, H. T. C. Stoof (2001). Quantum phases in an optical lattice. Physical Review A , 63 (5) . https://doi.org/10.1103/physreva.63.053601

Identifiers

DOI
10.1103/physreva.63.053601
arXiv
cond-mat/0011108

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Data completeness: 84%