Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-12-29
Acta Phys. Pol. B Proc. Suppl. 5, 535 - 540 (2012)
Physics
Nuclear Physics
Nuclear Theory
6 pages, 2 figures, contribution to "Strangeness in Quark Matter 2011", Cracow, September 18-24, 2011
Scientific paper
The measurement of the mass 1.97 +/- 0.04 M_sun for PSR J1614-2230 provides a new constraint on the equation of state and composition of matter at high densities. In this contribution we investigate the possibility that the dense cores of neutron stars could contain strange quarks either in a confined state (hyperonic matter) or in a deconfined one (strange quark matter) while fulfilling a set of constraints including the new maximum mass constraint. We account for the possible appearance of hyperons within an extended version of the density-dependent relativistic mean-field model, including the phi-meson interaction channel. Deconfined quark matter is described by the color superconducting three-flavor NJL model.
Blaschke David
Grigorian Hovik
Lastowiecki Rafal
Typel Stefan
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