Nambu-Jona-Lasinio model of qq Bose-Einstein condensation and a pseudogap phase

Journal Article · Sat Oct 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.076006· OSTI ID:20713684

Castorina, P; Zappala, D ^[1]; INFN-Catania, ^[2]; Nardulli, G ^[3]; INFN-Bari, ^[2]

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1. Department of Physics, University of Catania (Italy)
2. Italy
3. Department of Physics and TIRES Center, University of Bari (Italy)

We show the existence of a pseudogap phase in the Nambu-Jona-Lasinio model of quark interactions. In the pseudogap phase chiral symmetry is restored but qq pseudoscalar mesons still exist and they are massive. Such a behavior is intermediate between a BCS superconductor and a Bose-Einstein Condensate. We suggest the relevance of this phenomenon for an understanding of recent lattice QCD and experimental data.

• OSTI ID: 20713684
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BOSE-EINSTEIN CONDENSATION
CHIRAL SYMMETRY
LATTICE FIELD THEORY
PARTICLE INTERACTIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUARKS
SUPERCONDUCTORS