Neutral quark matter in a Nambu-Jona-Lasinio model with vector interaction

Journal Article · Thu Oct 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.074019· OSTI ID:21325234

Abuki, H ^[1]; Gatto, R ^[2]; Ruggieri, M ^[3]

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1. Institut fuer Theoretische Physik, J. W. Goethe Universitaet, D-60438 Frankfurt am Main (Germany)
2. Departement de Physique Theorique, Universite de Geneve, CH-1211 Geneve 4 (Switzerland)
3. INFN, Sezione di Bari, I-70126 Bari (Italy)

We investigate the three flavor Nambu-Jona-Lasinio model of neutral quark matter at zero temperature and finite density, taking into account the scalar, the pseudoscalar, and the Kobayashi-Maskawa-'t Hooft interactions as well as the repulsive vector plus axial-vector interaction terms (vector extended Nambu-Jona-Lasinio). We focus on the effect of the vector interaction on the chiral restoration at finite density in neutral matter. We also study the evolution of the charged pseudoscalar meson energies as a function of the quark chemical potential.

• OSTI ID: 21325234
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
DENSITY
FLAVOR MODEL
INTERACTIONS
KOBAYASHI-MASKAWA MATRIX
PSEUDOSCALAR MESONS
QUARK MATTER
QUARKS