The boson-fermion model in the mean-field approximation

被引：10

作者：

Piegari, E ^{[1
]}

Cataudella, V ^{[1
]}

Iadonisi, G ^{[1
]}

机构：

[1] INFM, Unita Napoli, Dipartimento Sci Fis, I-80125 Naples, Italy

来源：

PHYSICA C | 1998年 / 303卷 / 3-4期

关键词：

boson; fermion; mean-field approximation;

D O I：

10.1016/S0921-4534(98)00237-8

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The boson-fermion model is studied within the mean-field approximation including Pauli principle effects in the boson energy renormalization and Coulomb short-range repulsion among fermions and bosons. It is shown that there is a finite critical temperature at which Cooper pairing occurs accompanied by the divergence of the renormalized boson propagator at q = 0 and w = 0. The chemical potential, the entropy and the specific heat are also discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：273 / 286

页数：14

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