Generalized Ward identity and gauge invariance of the color-superconducting gap

被引：7
|
作者：
Hou, DF [1 ]
Wang, Q
Rischke, DH
机构：
[1] Goethe Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany
[2] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China
[3] Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China
来源：
PHYSICAL REVIEW D | 2004年 / 69卷 / 07期
关键词：
D O I：
10.1103/PhysRevD.69.071501
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We derive a generalized Ward identity for color-superconducting quark matter via the functional integral approach. The identity implies the gauge independence of the color-superconducting gap parameter on the quasiparticle mass shell to subleading order in the covariant gauge.
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页数：5
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