MG14 - Talk detail

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In addition to its general importance the physics of neutron stars serves as a crucial complement to relativistic heavy-ion physics in the study of strongly interacting matter at high temperatures and/or densities. Heavy-ion collisions typically sample conditions of high temperature, whereas neutron star properties like masses are determined by the equation of state at low temperatures and high densities. In recent years, the measurements of two-solar mass stars have triggered many theoretical studies, trying to translate the findings into possible constraints on the existence of exotic matter in neutron stars. Most analyses show that as a consequence the amount of strange hadronic matter in the star is severely limited. However, this restriction is not that clear in the case of strange quarks in hybrid stars. In the presentation calculations of stellar matter including hyperons and quarks will be presented. The possibility of strange hybrid stars and twin star solutions will be discussed. In addition vector-meson condensation in the stellar core is investigated.

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