Asymmetric Nuclear Matter and Neutron Star Properties in Relativistic ab initio Theory in the Full Dirac Space

Abstract

The long-standing controversy about the isospin dependence of the effective Dirac mass in ab initio calculations of asymmetric nuclear matter is clarified by solving the relativistic Brueckner-Hartree-Fock equations in the full Dirac space. The symmetry energy and its slope parameter at the saturation density are $E_{\text{sym}}({\rho }_0)=33.1$ MeV and $L=65.2$ MeV, in agreement with empirical and experimental values. Further applications predict the neutron star radius $R_{1.4M_{\odot }}\approx 12$ km and the maximum mass of a neutron star $M_{\text{max}}\le 2.4M_{\odot }$.

6 pages, 3 figures

References in corpus (14)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Neutron Star Observations: Prognosis for Equation of State Constraints
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• Neutron skin of 208Pb, nuclear symmetry energy, and the parity radius experiment
• Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density
• Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817
• Relativistic Brueckner-Hartree-Fock theory for finite nuclei
• Nuclear matter in relativistic Brueckner-Hartree-Fock theory with Bonn potential in the full Dirac space
• Symmetry energy systematics and its high density behavior

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• Microscopic optical potential from the relativistic Brueckner-Hartree-Fock theory: Proton-nucleus scattering
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• Hadron-quark phase transition in neutron star by combining the relativistic Brueckner-Hartree-Fock theory and Dyson-Schwinger equation approach
• Properties of ${}^{208}$Pb predicted from the relativistic equation of state in the full Dirac space
• Rotating Neutron Stars with the Relativistic Ab Initio Calculations
• Neutron Star with Dark Matter Admixture: A Candidate for Bridging the Mass Gap
• In-medium nucleon-nucleon cross sections from relativistic ab initio calculations
• Impact of finite-range spin-orbit and tensor terms in Gogny EDF