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

P. Castorina·G. Nardulli·D. Zappala
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Abstract

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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P. Castorina, G. Nardulli, D. Zappala. 2005-10-11. Nambu Jona-Lasinio Model of \bar q q Bose Einstein Condensation and pseudogap phase. https://doi.org/10.1103/physrevd.72.076006

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