Condition for gapless color-antitriplet excitations in Nambu-Jona-Lasinio models [Elektronisk resurs]

• We present an exact condition for the existence of gapless quasiparticle excitations in Nambu-Jona-Lasinio 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. 

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