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arXiv math-ph/0307031math-phmath.MP
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玻色气体的平衡态

Equilibrium states for the Bose gas

L. Vandevenne, A. Verbeure, V. A. Zagrebnov

摘要:

严格计算了具有吸引边界条件的自由玻色气体巨正则系综热力学极限的正则对易关系(CCR)循环表示的生成泛函.我们用它来研究凝聚本地化作为一个函数的相似点的热力学极限使用一系列的增长凸容器。显式地获得Kac函数,证明了尽管凝聚密度局部为零,但在凝聚区域中系综的不等价性。

英文摘要:

The generating functional of the cyclic representation of the CCR (Canonical Commutation Relations) representation for the thermodynamic limit of the grand canonical ensemble of the free Bose gas with attractive boundary conditions is rigorously computed. We use it to study the condensate localization as a function of the homothety point for the thermodynamic limit using a sequence of growing convex containers. The Kac function is explicitly obtained proving non-equivalence of ensembles in the condensate region in spite of the condensate density being zero locally.

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