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Article overview
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Two-dimensional Bose gas at low density | A.A.OVCHINNIKOV
; | Date: |
1 Apr 1993 | Subject: | cond-mat | Affiliation: | Institute for Nuclear Research RAS, Moscow | Abstract: | We propose a new method to describe the interacting bose gas at zero temperature. We use the decomposition of the logarithm of the wave function into the irreducible $n$-point functions. We argue that in the low density limit this expansion corresponds to the expansion of the ground-state energy in powers of the small parameter. For three-dimensional system the correction to the ground-state energy in density is reproduced. For two-dimensional dilute bose gas the ground- state energy in the leading order in the parameter $|lna^2
ho|^{-1}$ where $a$ is a scattering length is obtained. | Source: | arXiv, cond-mat/9304001 | Services: | Forum | Review | PDF | Favorites |
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