TY  - INPR
A1  - Hanauske, Matthias
A1  - Satarov, Leonid M.
A1  - Mishustin, Igor N.
A1  - Stöcker, Horst
A1  - Greiner, Walter
T1  - Strange quark stars within the Nambu-Jona-Lasinio model
N2  - We investigate the properties of charge neutral equilibrium cold quark matter within the Nambu Jona-Lasinio model. The calculations are carried out for di erent ratios of coupling constants characterizing the vector and scalar 4 fermion interaction, xi = GV /GS. It is shown that for xi < 0.4 matter is self bound and for xi < 0.65 it has a first order phase transition of the liquid gas type. The Gibbs conditions in the mixed phase are applied for the case of two chemical potentials associated with the baryon number and electric charge. The characteristics of the quark stars are calculated for xi = 0, 0.5 and 1. It is found that the phase transition leads to a strong density variation at the surface of these stars. For xi = 1 the properties of quark stars show behaviors typical for neutron stars. At >< 0.4 the stars near to the maximum mass have a large admixture of strange quarks in their interiors. PACS number: 14.65.-q, 26.60.+c, 97.10.-q
KW  - Nambu Jona-Lasinio Modell
KW  - kalte dunkle Materie
KW  - Quark-Sterne
KW  - Nambu Jona-Lasinio model
KW  - cold quark matter
KW  - strange quark star
Y1  - 2001
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3230
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-21741
ER  -