A Pair Hamiltonian Model of a Non-ideal Boson Gas

Pulé, J. V. and Zagrebnov, V. A. (1992) A Pair Hamiltonian Model of a Non-ideal Boson Gas. (Preprint)

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Abstract

The pressure in the thermodynamic limit of a non-ideal Boson gas whose Hamiltonian includes only diagonal and pairing terms can be expressed as the infimum of a functional depending on two measures on momentum space: a positive measure describing the particle density and a complex measure describing the pair density. In this paper we examine this variational problem with the object of determining when the model exhibits Bose-Einstein condensation. In addition we show that if the pairing term in the Hamiltonian is positive then it has no effect.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 19 Jun 2018 14:12
Last Modified: 19 Jul 2018 13:00
URI: http://dair.dias.ie/id/eprint/732

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