COLLECTIVE EXCITATIONS IN THE SUPERCONDUCTING PHASE OF THE ONE-BAND HUBBARD-MODEL

被引：0
|
作者：
POPOV, VN
SEVASTYANOV, PA
机构：
来源：
THEORETICAL AND MATHEMATICAL PHYSICS | 1995年 / 102卷 / 03期
关键词：
D O I：
10.1007/BF01017883
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The method of functional integration is used to investigate the collective excitations in the superconducting state of the one-band two-dimensional Hubbard model with repulsion. The energy spectrum of the Bose modes is obtained. The existence of a branch of Bogolyubov sound is demonstrated. The phase structure and symmetry of the model are also considered.
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页码：331 / 335
页数：5
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