Abstract
We discuss the effect of exotic particles in neutron star matter and the corresponding impact on gross properties of neutron stars within effective models for the strong interaction. Particularly, for the quark-hadron parity-doublet model, we show results for compact star properties and discuss the phase structure of the model and its possible relevance for heavy-ion collision phenomenology.
Highlights
Studying the phase structure of hot and dense strongly interacting matter is central to many experimental and theoretical efforts in modern nuclear physics
As a complement to a range of ultrarelativistic heavy-ion collision experiments targeting in particular hot matter, the environment of neutron stars samples high-density matter at very low temperature
One cannot observe the dense matter directly, but the observations of stellar properties like mass, radius and cooling behaviour have to be interpreted using theoretical models in order to constrain the equation of state of stellar matter
Summary
Studying the phase structure of hot and dense strongly interacting matter is central to many experimental and theoretical efforts in modern nuclear physics. As a complement to a range of ultrarelativistic heavy-ion collision experiments targeting in particular hot matter, the environment of neutron stars samples high-density matter at very low temperature. One cannot observe the dense matter directly, but the observations of stellar properties like mass, radius and cooling behaviour have to be interpreted using theoretical models in order to constrain the equation of state of stellar matter. In order to calculate strong interaction matter relevant for compact stars as well as heavy-ion physics we have developed and studied hadronic and hadron-quark models within the so-called chiral mean field (CMF) approach
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