Condition for gapless color-antitriplet excitations in Nambu-Jona-Lasinio models
PHYSICAL REVIEW C, vol.73, no.3, 2006 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 73 Issue: 3
- Publication Date: 2006
- Doi Number: 10.1103/physrevc.73.035203
- Journal Name: PHYSICAL REVIEW C
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Open Archive Collection: AVESIS Open Access Collection
- Hacettepe University Affiliated: Yes
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.