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
收藏
页码：273 / 286
页数：14
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