A link between measured neutron star masses and lattice QCD data

Abstract

We study the hadron-quark phase transition in neutron star matter and the structural properties of hybrid stars using an equation of state (EOS) for the quark phase derived with the field correlator method (FCM). We make use of the measured neutron star masses, and particularly the mass of PSR J1614-2230, to constrain the values of the gluon condensate $G_2$ which is one of the EOS parameter within the FCM. We find that the values of $G_2$ extracted from the mass measurement of PSR J1614-2230 are fully consistent with the values of the same quantity derived, within the FCM, from recent lattice quantum chromodynamics (QCD) calculations of the deconfinement transition temperature at zero baryon chemical potential. The FCM thus provides a powerful tool to link numerical calculations of QCD on a space-time lattice with neutron stars physics.

Minor changes and typos corrected

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Cited by in corpus (13)

• Constraining and applying a generic high-density equation of state
• Equation of state of dense nuclear matter and neutron star structure from nuclear chiral interactions
• Quark matter nucleation in neutron stars and astrophysical implications
• Fast spinning strange stars: possible ways to constrain interacting quark matter parameters
• Microscopic equation of state of hot nuclear matter for numerical relativity simulations
• Effects of Chiral Effective Field Theory Equation of State on Binary Neutron Star Mergers
• Quark matter in Neutron Stars within the Field Correlator Method
• Constant entropy hybrid stars: a first approximation of cooling evolution
• Special point on the mass radius diagram of hybrid stars
• Hybrid star structure with the Field Correlator Method
• Cooling of hybrid neutron stars with microscopic equations of state
• On the anomalous mass defect of strange stars in the Field Correlator Method
• Neutron Star masses from the Field Correlator Method Equation of State