On the Momentum Distribution and Condensate Fraction in the Bose Liquid

Details On the Momentum Distribution and Condensate Fraction in the Bose Liquid On the Momentum Distribution and Condensate Fraction in the Bose Liquid

1997-10-31

arxiv.org/abs/cond-mat/9710345v1

Phys. Lett. A 239 (1998) 121-126

Physics

Condensed Matter

Statistical Mechanics

12 pages, REVTEX, no figures, submitted to Phys. Lett. A

Scientific paper

10.1016/S0375-9601(97)00946-8

The model recently proposed by A.A. Shanenko [Phys. Lett. A 227 (1997) 367] is used to derive linear integro-differential equations whose solutions provide reasonable estimates for the momentum distribution and condensate fraction in interacting many-boson system at zero temperature. An advantage of these equations is that they can be employed in the weak coupling regime and beyond. As an example, analytical treatment of the weak coupling case is given.

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