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

Defu Hou (Frankfurt U. & Huazhong Normal U.); Dirk H. Rischke (Frankfurt U.); Qun Wang (Frankfurt U. & Shangdong U.)

arxiv: hep-ph/0401152 · v1 · submitted 2004-01-21 · ✦ hep-ph

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

Defu Hou (Frankfurt U. & Huazhong Normal U.) , Qun Wang (Frankfurt U. & Shangdong U.) , Dirk H. Rischke (Frankfurt U.) This is my paper

classification ✦ hep-ph

keywords color-superconductinggaugeidentitygeneralizedwardapproachcovariantderive

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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 quasi-particle mass shell to subleading order in covariant gauge.

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

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