Reconciling Nuclear and Astrophysical Constraints

Abstract

In view of new constraints put forth by recent observations and measurements in the realm of astrophysics and nuclear physics, we update the non-linear realization of the sigma model as to reflect such constraints. By doing this, we obtain new equations of state that may be used to describe neutron stars. Such equations of state are obtained by investigating different ways by which the vector mesons self-interact. Furthermore, we also investigate the role played by the delta mesons in the model. As a result, we are able to develop equations of state that are in better agreement with data, such as nuclear compressibility and slope of the symmetry energy at saturation, star masses, radii, and cooling profiles.

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Cited by in corpus (26)

• Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
• Stellar properties and nuclear matter constraints
• What do we learn about vector interactions from GW170817?
• Cooling of Small and Massive Hyperonic Stars
• Probing the incompressibility of nuclear matter at ultra-high density through the prompt collapse of asymmetric neutron star binaries
• Equations of state for hot neutron stars -- II. The role of exotic particle degrees of freedom
• The application of the Quark-Hadron Chiral Parity-Doublet Model to neutron star matter
• A self-consistent study of magnetic field effects on hybrid stars
• EoS for hot neutron stars
• Effect of topological defects on "nuclear pasta" observables
• Neutron star collapse and gravitational waves with a non-convex equation of state
• Delta Baryons in Neutron-Star Matter under Strong Magnetic Fields
• Effect of isovector scalar meson on equation of state of dense matter within relativistic mean field model
• The internal composition of proto-neutron stars under strong magnetic fields
• High-Energy Phase Diagrams with Charge and Isospin Axes under Heavy-Ion Collision and Stellar Conditions
• Universal relations for the Keplerian sequence of rotating neutron stars
• Modelling Hybrid Stars in Quark-Hadron Approaches
• Astrophysics and Nuclear Physics Informed Interactions in Dense Matter: Inclusion of PSR J0437-4715
• Influence of the interactions of scalar mesons on the behavior of the symmetry energy
• Exploring the effects of Delta Baryons in magnetars
• A self-consistent study of magnetic field effects on hybrid stars
• Universal Relations for rapidly rotating neutron stars using supervised machine-learning techniques
• Modern nuclear and astrophysical constraints of dense matter in a renormalized chiral approach
• Direct nonparametric multimessenger constraints on the equation of state of cold dense nuclear matter
• Tracing the Trace Anomaly of Dense Matter inside Neutron Stars
• Chiral, parity-doublet, effective-Lagrangian mean-field theories for nuclear and astrophysical phenomenology