Astrophysical constraints on the confining models : the Field Correlator Method

Abstract

We explore the relevance of confinement in quark matter models for the possible quark core of neutron stars. For the quark phase, we adopt the equation of state (EoS) derived with the Field Correlator Method, extended to the zero temperature limit. For the hadronic phase, we use the microscopic Brueckner-Hartree-Fock many-body theory. We find that the currently adopted value of the gluon condensate $G_2\simeq 0.006-0.007\mathrm{Ge}{\mathrm{V}}^4$, which gives a critical temperature $T_c\simeq 170\mathrm{MeV}$, produces maximum masses which are only marginally consistent with the observational limit, while larger masses are possible if the gluon condensate is increased.

7 pages, 5 figures

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Cited by in corpus (18)

• Unified equation of state for neutron stars on a microscopic basis
• Constraining and applying a generic high-density equation of state
• Properties of the nuclear medium
• Quark deconfinement transition in neutron stars with the field correlator method
• Quark matter in Neutron Stars within the Field Correlator Method
• The quark-hadron thermodynamics in magnetic field
• A link between measured neutron star masses and lattice QCD data
• Nuclear matter equation of state from a quark-model nucleon-nucleon interaction
• Hybrid star structure with the Field Correlator Method
• Cooling of hybrid neutron stars with microscopic equations of state
• Hybrid star within the framework of a lowest-order constraint variational method
• QCD Equation of State and Cosmological Parameters in Early Universe
• Structure and tidal deformability of a hybrid star within the framework of the field correlator method
• SQM studied in the Field Correlator Method
• Strange stars properties calculated in the framework of the Field Correlator Method
• Neutron Star masses from the Field Correlator Method Equation of State
• On the anomalous mass defect of strange stars in the Field Correlator Method
• Unruh thermalization, gluon condensation and freeze-out