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arXiv 0712.4371cond-mat.stat-mechhep-thmath-phmath.MP
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圆上多组分库仑气体的配分函数

The Partition Function of a Multi-Component Coulomb Gas on a Circle

Niko Jokela, Matti Jarvinen, Esko Keski-Vakkuri

摘要:

我们研究了一个二维库仑气体组成的混合粒子携带各种积极的多个整数电荷,限制在一个单位圆。我们考虑系统的正则和巨正则系综,并试图计算的配分函数解析,使用Toeplitz和合流范德蒙行列式。就像在简单的单组分系统(戴森气体)中一样,配分函数在特定温度下简化$β=2$,使我们能够找到它们的紧凑表达式。

英文摘要:

We study a two-dimensional Coulomb gas consisting of a mixture of particles carrying various positive multiple integer charges, confined on a unit circle. We consider the system in the canonical and grand canonical ensembles, and attempt to calculate the partition functions analytically, using Toeplitz and confluent Vandermonde determinants. Just like in the simple one-component system (Dyson gas), the partition functions simplify at special temperature $β=2$, allowing us to find compact expressions for them.

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