%0 Journal Article %1 Blaschke2008123flavor %A Blaschke, David %A Sandin, Fredrik %A Klahn, Thomas %D 2008 %K color\_superconductivity, neutron\_stars, quark\_matter %R 10.1088/0954-3899/35/10/104077 %T 1-2-3-flavor color superconductivity in compact stars %U http://dx.doi.org/10.1088/0954-3899/35/10/104077 %X We suggest a scenario where the three light quark flavors are sequentially deconfined under increasing pressure in cold asymmetric nuclear matter, e.g., as in neutron stars. The basis for our analysis is a chiral quark matter model of Nambu--Jona-Lasinio (NJL) type with diquark pairing in the spin-1 single flavor (CSL) and spin-0 two/three flavor (2SC/CFL) channels, and a Dirac-Brueckner Hartree-Fock (DBHF) approach in the nuclear matter sector. We find that nucleon dissociation sets in at about the saturation density, n\_0, when the down-quark Fermi sea is populated (d-quark dripline) due to the flavor asymmetry imposed by beta-equilibrium and charge neutrality. At about 3n\_0 u-quarks appear forming a two-flavor color superconducting (2SC) phase, while the s-quark Fermi sea is populated only at still higher baryon density. The hybrid star sequence has a maximum mass of 2.1 M\_sun. Two- and three-flavor quark matter phases are found only in gravitationally unstable hybrid star solutions.

@article{Blaschke2008123flavor, abstract = {We suggest a scenario where the three light quark flavors are sequentially deconfined under increasing pressure in cold asymmetric nuclear matter, e.g., as in neutron stars. The basis for our analysis is a chiral quark matter model of Nambu--Jona-Lasinio (NJL) type with diquark pairing in the spin-1 single flavor (CSL) and spin-0 two/three flavor (2SC/CFL) channels, and a Dirac-Brueckner Hartree-Fock (DBHF) approach in the nuclear matter sector. We find that nucleon dissociation sets in at about the saturation density, n\_0, when the down-quark Fermi sea is populated (d-quark dripline) due to the flavor asymmetry imposed by beta-equilibrium and charge neutrality. At about 3n\_0 u-quarks appear forming a two-flavor color superconducting (2SC) phase, while the s-quark Fermi sea is populated only at still higher baryon density. The hybrid star sequence has a maximum mass of 2.1 M\_sun. Two- and three-flavor quark matter phases are found only in gravitationally unstable hybrid star solutions.}, added-at = {2014-01-09T15:14:33.000+0100}, archiveprefix = {arXiv}, author = {Blaschke, David and Sandin, Fredrik and Klahn, Thomas}, biburl = {https://www.bibsonomy.org/bibtex/29ce9da2dbc5e086f98d246dd12b6ca5b/jaspervh}, citeulike-article-id = {5732006}, citeulike-linkout-0 = {http://arxiv.org/abs/0808.0181}, citeulike-linkout-1 = {http://arxiv.org/pdf/0808.0181}, citeulike-linkout-2 = {http://dx.doi.org/10.1088/0954-3899/35/10/104077}, day = 1, doi = {10.1088/0954-3899/35/10/104077}, eprint = {0808.0181}, interhash = {f648d1eddc413d5d2cd92b3027cfece1}, intrahash = {9ce9da2dbc5e086f98d246dd12b6ca5b}, keywords = {color\_superconductivity, neutron\_stars, quark\_matter}, month = aug, posted-at = {2009-09-07 09:17:51}, priority = {2}, timestamp = {2014-01-09T15:14:33.000+0100}, title = {1-2-3-flavor color superconductivity in compact stars}, url = {http://dx.doi.org/10.1088/0954-3899/35/10/104077}, year = 2008 }