Phase diagram of two-species Bose-Einstein condensates in an optical lattice

Details Phase diagram of two-species Bose-Einstein condensates in an optical lattice Phase diagram of two-species Bose-Einstein condensates in an optical lattice

2005-06-04

arxiv.org/abs/cond-mat/0506100v1

PHYSICAL REVIEW A 71, 053608 (2005)

Physics

Condensed Matter

Soft Condensed Matter

13 pages, 2 figures

Scientific paper

10.1103/PhysRevA.71.053608

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.

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