Phase diagram of two-species Bose-Einstein condensates in an optical lattice
arXiv:cond-mat/0506100 · doi:10.1103/PhysRevA.71.053608
Abstract
The exact macroscopic wave functions of two-species Bose-Einstein condensates in an optical lattice beyond the tight-binding approximation are studied by solving the coupled nonlinear Schrodinger equations. The phase diagram for superfluid and insulator phases of the condensates is determined analytically according to the macroscopic wave functions of the condensates, which are seen to be traveling matter waves.
arXiv comment13 pages, 2 figures
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- Dynamical instability of a Bose-Einstein condensate with higher-order interactions in an optical potential through a variational approach
- Tunneling of a few strongly repulsive hard-sphere bosons in an optical lattice with tight external harmonic confinement: A quantum Monte Carlo investigation in continuous space
- Models of spin-orbit coupled oligomers