Gauge invariance of the color-superconducting gap on the mass shell

Details Gauge invariance of the color-superconducting gap on the mass shell Gauge invariance of the color-superconducting gap on the mass shell

2001-11-24

arxiv.org/abs/nucl-th/0111070v1

Nucl.Phys. A702 (2002) 177-184

Physics

Nuclear Physics

Nuclear Theory

8 pages, Proceedings of the Conference on Statistical QCD, Bielefeld, August 26 - 30, 2001

Scientific paper

10.1016/S0375-9474(02)00702-9

The gap parameter for color superconductivity is expected to be a gauge
invariant quantity, at least on the appropriate mass shell. Computing the gap
to subleading order in the QCD coupling constant, g, we show that the prefactor
of the exponential in 1/g is gauge dependent off the mass shell, and
independent of gauge on the mass shell.

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