TY  - INPR
A1  - Mishustin, Igor N.
A1  - Satarov, Leonid M.
A1  - Stöcker, Horst
A1  - Greiner, Walter
T1  - Metastable quark-antiquark droplets within the Nambu-Jona-Lasinio model
N2  - Chemically non equilibrated quark antiquark matter is studied within the Nambu Jona-Lasinio model. The equations of state of non strange (q = u, d) and strange (q = s) qq systems are calculated in the mean field approximation. The existence of metastable bound states with zero pressure is predicted at finite densities and temperatures T 50 MeV. It is shown that the minimum energy per particle occurs for symmetric systems, with equal densities of quarks and antiquarks. At T = 0 these metastable states have quark number densities of about 0.5 fm 3 for q = u, d and of 1 fm 3 for q = s. A first order chiral phase transition is found at finite densities and temperatures. The critical temperature for this phase transition is approximately 75 MeV (90 MeV) for the non strange (strange) baryon free quark antiquark matter. For realistic choices of parameters, the model does not predict a phase transition in chemically equilibrated systems. Possible decay channels of the metastable qq droplets and their signatures in relativistic heavy ion collisions are discussed.
KW  - Quark Antiquark
KW  - Nambu Jona-Lasinio Modell
KW  - Zustandsgleichung
KW  - quark antiquark
KW  - Nambu Jona-Lasinio model
KW  - equation of state
Y1  - 2005
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3106
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-22855
ER  -