An Abelian Ward identity and the vertex corrections to the color superconducting gap

  • We derive an Abelian-like Ward identity in the color superconducting phase and calculate vertex corrections to the color superconducting gap. Making use of the Ward identity, we show that subleading order contributions to the gap from vertices are absent for gapped excitations.

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XU Hao-Jie and WANG Qun. An Abelian Ward identity and the vertex corrections to the color superconducting gap[J]. Chinese Physics C, 2009, 33(9): 753-758. doi: 10.1088/1674-1137/33/9/008
XU Hao-Jie and WANG Qun. An Abelian Ward identity and the vertex corrections to the color superconducting gap[J]. Chinese Physics C, 2009, 33(9): 753-758.  doi: 10.1088/1674-1137/33/9/008 shu
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Received: 2008-12-03
Revised: 2009-01-21
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An Abelian Ward identity and the vertex corrections to the color superconducting gap

    Corresponding author: XU Hao-Jie,

Abstract: 

We derive an Abelian-like Ward identity in the color superconducting phase and calculate vertex corrections to the color superconducting gap. Making use of the Ward identity, we show that subleading order contributions to the gap from vertices are absent for gapped excitations.

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