A PAIR HAMILTONIAN MODEL OF A NONIDEAL BOSON GAS

被引：0
|
作者：
PULE, JV [1 ]
ZAGREBNOV, VA [1 ]
机构：
[1] KATHOLIEKE UNIV LEUVEN,INST THEORET FYS,B-3001 LOUVAIN,BELGIUM
来源：
ANNALES DE L INSTITUT HENRI POINCARE-PHYSIQUE THEORIQUE | 1993年 / 59卷 / 04期
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D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页码：421 / 444
页数：24
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