Indications of a Pseudogap in the Nambu Jona-Lasinio model

Abstract

The survival of \bar q q bound states at temperatures higher than the chiral restoration temperature, T_c, recently observed in lattice QCD, is discussed in the framework of the Nambu Jona-Lasinio model. The perturbative determination of the spectral function provides an indication of a pseudogap phase above T_c.

Comments: Contributed to the International Workshop: QCD@Work 2005, Conversano, Bari, Italy, 16-20 Jun 2005