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Gluon self-energy in a two-flavor color superconductor

Dirk H. Rischke
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Abstract

The energy and momentum dependence of the gluon self-energy is investigated in a color superconductor with two flavors of massless quarks. The presence of a color-superconducting quark-quark condensate modifies the gluon self-energy for energies which are of the order of the gap parameter. For gluon energies much larger than the gap, the self-energy assumes the form given by the standard hard-dense loop approximation. It is shown that this modification of the gluon self-energy does not affect the magnitude of the gap to leading and subleading order in the weak-coupling limit.

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Dirk H. Rischke. 2001-03-20. Gluon self-energy in a two-flavor color superconductor. https://doi.org/10.1103/physrevd.64.094003

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