Gluon self-energy in a two-flavor color superconductor
arXiv:nucl-th/0103050 · doi:10.1103/PhysRevD.64.094003
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.
21 pages, 6 figures, RevTeX, aps and epsfig style files required
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