Hybrid stars with color superconductivity within a nonlocal chiral quark model
نویسنده
چکیده
The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation. Special emphasis is on the occurrence of a diquark condensate which signals a phase transition to color superconductivity and its effects on the equation of state. We present a fit formula for ’Bag pressure’, which is a constant in case when the quark matter is not color superconducting. We calculate the quark star configurations by solving the TolmanOppenheimerVolkoff equations and demonstrate the effects of diquark condensation on the stability of hybrid stars for different formfactor models of quark interaction. PACS number(s): 04.40.Dg, 12.38.Mh, 26.60.+c, 97.60.Jd
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تاریخ انتشار 2003