Gauge dependence identities for color superconducting QCD

Details Gauge dependence identities for color superconducting QCD Gauge dependence identities for color superconducting QCD

2003-05-12

arxiv.org/abs/hep-ph/0305108v2

Phys.Rev.D68:011502,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, REVTEX4; v2: typo corrected, 2 references added

Scientific paper

10.1103/PhysRevD.68.011502

Using generalized Nielsen identities a formal proof is given that the fermionic quasiparticle dispersion relations in a color superconductor are gauge independent. This turns out to involve gluonic tadpoles which are calculated to one-loop order in a two-flavor color superconductor. Regarding the appearance of gluon tadpoles, we argue that in QCD the color superconducting phase is automatically color neutral.

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