Condition for gapless color-antitriplet excitations in Nambu-Jona-Lasinio models


Sandin F., Oztas A. M.

PHYSICAL REVIEW C, vol.73, no.3, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 3
  • Publication Date: 2006
  • Doi Number: 10.1103/physrevc.73.035203
  • Title of Journal : PHYSICAL REVIEW C

Abstract

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.