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Interacting Bose Gas in an Optical Lattice | | K. Ziegler
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2 Aug 2001 | | Journal: | Journ. Low Temp. Phys. 126, 1431 (2002) | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Abstract: | A grand canonical system of hard-core bosons in an optical lattice is considered. The bosons can occupy randomly $N$ equivalent states at each lattice site. The limit $N oinfty$ is solved exactly in terms of a saddle-point integration, representing a weakly-interacting Bose gas. At T=0 there is only a condensate in the limit $N oinfty$. Corrections in 1/N increase the total density of bosons but suppress the condensate. This indicates a depletion of the condensate due to increasing interaction at finite values of N. | | Source: | arXiv, cond-mat/0108041 | | Services: | Forum | Review | PDF | Favorites | |
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