Fluctuation correction to the ground state energy density of a dilute Bose gas in the functional Schrödinger picture

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A dilute Bose gas system is studied using the functional Schrödinger picture theory. The ground state properties are obtained by solving the infinite dimensional Schrödinger equation variationally. It is shown that a shifted Gaussian trial wavefunctional enables us to calculate a higher order correction, which corresponds to the fluctuation contribution from the condensate. The obtained term is compared with the quantum correction arising from the low energy $3 \to 3$ scattering.

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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/28541

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9808233
 http://arxiv.org/abs/cond-mat/9808233

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arXiv