๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Exploring the QCD phase diagram with compact stars

โœ Scribed by D. Blaschke; H. Grigorian; A. Khalatyan; D.N. Voskresensky

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
278 KB
Volume
141
Category
Article
ISSN
0920-5632

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โœฆ Synopsis

We investigate a nonlocal chiral quark model with separable 4-fermion interaction for the case of U (3) flavor symmetry and show that strange quark matter is unlikely to occur in a large enough volume of a compact star to entail remarkable observational consequences. The phase diagram in the two-flavor sector of such model has a critical end point of the line of first order chiral/deconfinement phase transitions on which a triple point marks the junction with the critical line for second order phase transitions to two-flavor color superconductivity (2SC) below T โˆผ 80 MeV. Stable hybrid star configurations with large quark matter core in a color superconducting phase can exist. A consistent cooling phenomenology requires that all quark species be gapped, the minimal pairing gap of the order of 10 -100 keV.

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