Condition for gapless color-antitriplet excitations in NJL models
arXiv:hep-ph/0512087 · doi:10.1103/PhysRevC.73.035203
Abstract
We present an exact condition for the existence of gapless quasiparticle excitations in NJL models of color superconducting quark matter with a quark-quark interaction in the scalar color-antitriplet channel. The condition can be represented by a rotated ellipse in the plane of mass and chemical potential differences for the paired quark fields.
Accepted for publication in PRC. 5 pages, 4 figures; Corrected typos and added one more term to the series expansion in (19)
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