Speaker
Dr
Evgeni Kolomeitsev
(Matej Bel University)
Description
The equation of state of cold baryonic matter is studied within a relativistic mean-field model with hadron masses and coupling constants depending on the scalar field. All hadron masses undergo a universal scaling, whereas the coupling constants can scale differently.
The proper choice of the scaling function allows to control stiffness of the equation of state in different energy range. The appearance of hyperons in dense neutron star interiors is accounted for. However the equation of state remains sufficiently stiff if a reduction of the $\phi$ meson mass is included. Our equation of state matches well the constraints known from analyses of the astrophysical data and the particle production in heavy-ion collisions.
Primary author
Dr
Evgeni Kolomeitsev
(Matej Bel University)
Co-authors
Prof.
Dmitri Voskresensky
(National Research Nuclear University (MEPhI))
Mr
Konstantin Maslov
(National Research Nuclear University (MEPhI))
