Comment on 'Boson-fermion model beyond the mean-field approximation'

被引：5

作者：

Friedberg, R

Ren, HC

Tchernyshyov, O

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Rockefeller Univ, Dept Phys, New York, NY 10021 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1998年 / 10卷 / 13期

关键词：

D O I：

10.1088/0953-8984/10/13/024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In a recent paper, it has been suggested that there is no Cooper pairing in boson-fermion models of superconductivity. This result is based on an inconsistent approximation which violates an exact identity. Quite generally, the divergence of the fermion t-matrix (the Thouless criterion) is accompanied by the condensation of a boson mode.

引用

页码：3089 / 3092

页数：4

共 7 条

[1] Boson-fermion model beyond the mean-field approximation [J].