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Modeling of the neutron star interiors within the equation of state fitted to properties of hadron and nuclear matter

Mar. 23 - 14:30 - 2017

Oleksii Ivanytskyi (Bogolyubov Institute for Theoretical Physics, Kyiv, Ukraine)

 

Short range particle repulsion is proven to be rather important property
of the hadronic and nuclear matter equations of state. Excluded volume
effects play a significant role in the description of the experimental
data measured in nuclear-nuclear collisions. Modelling of the compact
astrophysical objects interior also require accounting for the hadronic
excluded volume which is necessary for thermodynamically consistent
description of the statistical phase transitions expected at high baryonic
densities typical for neutron stars. Novel approach based on the analysis
of the virial expansion is used to derive thermodynamically consistent
equation of state of strongly interacting matter. The mean-filed
interactions are also incorporated into this approach. Applications of the
present equation of state to the description of the hadronic
multiplicities measured in nuclear-nuclear collisions, to studies of the
nuclear matter phase diagram and to modelling of the neutron star
interiors are discussed.