Strangeness in Compact Stars

Details Strangeness in Compact Stars Strangeness in Compact Stars

2010-02-08

arxiv.org/abs/1002.1658v2

Physics

Nuclear Physics

Nuclear Theory

8 pages, invited talk given at the 10th International Conference on Hypernuclear and Strange Particle Physics (HYP-X) Septembe

Scientific paper

We discuss the impact of strange hadrons, in particular hyperons, on the gross features of compact stars and on core-collapse supernovae. Hyperons are likely to be the first exotic species which appears around twice normal nuclear matter density in the core of neutron stars. Their presence largely influences the mass-radius relation of compact stars, the maximum mass, the cooling of neutron stars, the stability with regard to the emission of gravitational waves from rotation-powered neutron stars and the possible early onset of the QCD phase transition in core-collapse supernovae. We outline also the constraints from subthreshold kaon production in heavy-ion collisions for the maximum possible mass of neutron stars.

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