Neutron Star masses from the Field Correlator Method Equation of State

Abstract

Abstract.We analyse the hadron-quark phase transition in neutron stars by confronting the hadronic Equation of State (EoS) obtained according to the microscopic BruecknerHartree-Fock many body theory, with the quark matter EoS derived within the Field Correlator Method. In particular, the latter EoS is only parametrized in terms of the gluon condensate and the large distance quark-antiquark potential, so that the comparison of the results of this analysis with the most recent measurements of heavy neutron star masses provides some physical constraints on these two parameters.

Thermal mass limit of neutron cores

“…of the protoneutron star models in Prakash et al [12] are ruled out. However, more recently, old models were refined and new models appeared [22][23][24][25][26][27][28][29][30][31][32][33][34] in order to account for the recently observed heavy neutron stars. Understanding the core structure of protoneutron stars is of great importance for Physics in general, because it will reveal the behaviour of matter at supranuclear densities and high temperatures that are unreachable from present laboratory experiments.…”