Abstract
We investigate protoneutron star matter using the state-of-the-art perturbative equation of state for cold and dense QCD in the presence of a fixed lepton fraction in which both electrons and neutrinos are included. Besides computing the modifications in the equation of state due to the presence of trapped neutrinos, we show that stable strange quark matter has a more restricted parameter space. We also study the possibility of nucleation of unpaired quark matter in the core of protoneutron stars by matching the lepton-rich QCD pressure onto a hadronic equation of state, namely TM1 with trapped neutrinos. Using the inherent dependence of perturbative QCD on the renormalization scale parameter, we provide a measure of the uncertainty in the observables we compute.
Highlights
Neutron stars provide a unique laboratory for the investigation of the strong interaction under extreme conditions [1]
To be consistent with current astrophysical observations of neutron star masses allowing for a core of quark matter [62], one has to choose values for X in the cold lepton-poor perturbative QCD (pQCD) equation of state, KRV-EoS, that match the cold lepton-poor TM1-EoS5 at a given critical baryon chemical potential and generate at least two-solar mass stars as maximum masses
In this work we have investigated protoneutron star matter using the state-of-the-art perturbative equation of state for cold and dense quantum chromodynamics (QCD) in the presence of a fixed lepton fraction in which both electrons and neutrinos are included
Summary
Neutron stars provide a unique laboratory for the investigation of the strong interaction under extreme conditions [1]. In this paper we investigate protoneutron star matter using the state-of-the-art perturbative equation of state for cold and dense QCD in the presence of a fixed lepton fraction in which both electrons and neutrinos are included. We study the possibility of nucleation of unpaired quark matter in the core of protoneutron stars by matching the lepton-rich QCD pressure onto a hadronic equation of state, namely TM1 with trapped neutrinos.
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