Nambu Jona-Lasinio Model of \bar q q Bose Einstein Condensation and pseudogap phase

Details Nambu Jona-Lasinio Model of \bar q q Bose Einstein Condensation and pseudogap phase Nambu Jona-Lasinio Model of \bar q q Bose Einstein Condensation and pseudogap phase

2005-05-11

arxiv.org/abs/hep-ph/0505089v2

Phys.Rev. D72 (2005) 076006

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 2 figures. Version to appear in Phys. Rev. D (a discussion on the cutoff and a few references added)

Scientific paper

10.1103/PhysRevD.72.076006

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 q\bar q 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.

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