Nuclear matter at finite temperature and static properties of proto-neutron star
Debashree Sen
TL;DR
This paper investigates the finite temperature properties of nuclear matter using an effective chiral model, examining phase transitions, equations of state, and proto-neutron star characteristics, aligning well with observational data.
Contribution
It provides a comprehensive analysis of nuclear matter at finite temperature, including phase transition behavior and proto-neutron star static properties, extending previous models with new temperature-dependent insights.
Findings
Critical temperature for liquid-gas phase transition matches experimental data.
Maximum gravitational mass estimates agree with observations of massive pulsars.
Surface redshift results satisfy astrophysical constraints.
Abstract
With the effective chiral model, the finite temperature properties of nuclear matter have been studied at different temperatures. For symmetric nuclear matter, I particularly focused on the possibility of liquid-gas phase transition at low temperature and density. The critical temperature obtained in this context, is consistent with the experimental and empirical findings. The free energy and entropy variations are also studied for different values of temperature. A few asymmetric nuclear matter properties like the equation of state and the speed of sound with respect to temperature are also examined. The work is also extended to obtain the equation of state of stable nuclear matter at finite temperature. For the neutrino free case, the various static proto-neutron star properties are computed for a wide range of temperature, relevant to proto-neutron stars. For all the values…
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