Thermal effects in hot and dilute homogeneous asymmetric nuclear matter

Abstract

We present a comprehensive analysis of hot and dilute isospin-asymmetric nuclear matter employing the temperature-dependent effective-relativistic mean-field theory (E-RMF). The E-RMF is applied to study the effect of $\delta$ and $\omega -\rho$ meson cross-coupling on the thermal properties of asymmetric nuclear matter using two recently developed IOPB-I and G3 parameter sets. These sets are known to reproduce the nuclear matter properties in agreement with various experimental and observational constraints. We consider the nuclear matter to be homogeneous and study the equation of state (EoS) for densities, temperature and asymmetry which are relevant for astrophysical simulations such as supernovae explosion. The effect of temperature is investigated in reference to the density-dependent free symmetry energy and its higher-order derivatives using the well known parabolic approximation. The larger value of ${\lambda }_{\omega }$ cross-coupling in G3 in addition to the $\delta$ meson coupling in G3 smoothen the free symmetry energy. Thermal effects on various state variables are examined at fixed temperature and isospin asymmetry by separating their T=0 and the finite-T expressions. The thermal effects are mainly governed by effective mass with larger effective mass estimating larger thermal contribution. The effect of temperature on isothermal and isentropic incompressibility is discussed which is in harmony with various available microscopic calculations. The liquid-gas phase transition properties are examined in asymmetric matter with two conserved charges in the context of different slope parameter and comparable symmetry energy in IOPB-I and G3 set. The spinodal instability, binodal curve and critical properties are found to be influenced by the slope parameter $L_{sym}$.

References in corpus (37)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• Neutron Star Structure and the Neutron Radius of 208Pb
• Equation of state and neutron star properties constrained by nuclear physics and observation
• Constraints on the density dependence of the symmetry energy
• Measurement of the Neutron Radius of 208Pb Through Parity-Violation in Electron Scattering
• Phase Transitions in Warm, Asymmetric Nuclear Matter
• Relativistic Equation of State of Nuclear Matter for Supernova Explosion
• Relativistic Hartree-Bogoliubov model with density-dependent meson-nucleon couplings
• Symmetry Energy II: Isobaric Analog States
• The Compression-Mode Giant Resonances and Nuclear Incompressibility
• On the Importance of NNLO QCD and Isospin-breaking Corrections in ${\epsilon }^{\prime }/\epsilon$
• A new multi-dimensional general relativistic neutrino hydrodynamics code for core-collapse supernovae. I. Method and code tests in spherical symmetry
• Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
• Effects of dark matter on the nuclear and neutron star matter
• New relativistic effective interaction for finite nuclei, infinite nuclear matter and neutron stars
• Equation of state effects in core-collapse supernovae
• Thermal properties of hot and dense matter with finite range interactions
• Rapid neutrino cooling in the neutron star MXB 1659-29
• Calculation of beta-decay rates in a relativistic model with momentum-dependent self-energies
• $Abinitio$ constraints on thermal effects of the nuclear equation of state
• Thermal properties of supernova matter: The bulk homogeneous phase
• New parameterization of the effective field theory motivated relativistic mean field model
• Finite-temperature extension for cold neutron star equations of state
• Instabilities in asymmetric nuclear matter
• Constraints on the skewness coefficient of symmetric nuclear matter within the nonlinear relativistic mean field model
• Thermal Properties of Asymmetric Nuclear Matter
• Astrophysics with core-collapse supernova gravitational wave signals in the next generation of gravitational wave detectors
• Coupling Neutrino Oscillations and Simulations of Core-Collapse Supernovae
• Measuring Nuclear Matter Parameters with NICER and LIGO/Virgo
• Nucleosynthesis Constraints on the Energy Growth Timescale of a Core-collapse Supernova Explosion
• Critical parameters of consistent relativistic mean-field models
• Critical parameters of liquid-gas phase transition in thermal symmetric and asymmetric nuclear matter
• Pasta phases within the QMC model
• Warm unstable asymmetric nuclear matter: critical properties and the density dependence of the symmetry energy
• Critical Properties of Symmetric Nuclear Matter in Low-Density Regime Using Effective-Relativistic Mean Field Formalism
• Steady State Equilibrium Condition of $np{e}^{\pm }$ Gas and Its Application to Astrophysics

Cited by in corpus (6)

• Pasta properties of the neutron star within effective relativistic mean-field model
• Crustal properties of a neutron star within an effective relativistic mean-field model
• Bayesian Inference of dense matter equation of state of neutron star with antikaon condensation
• Magnetised neutron star crust within effective relativistic mean-field model
• Exploring $\Delta$-resonance in neutron stars: implications from astrophysical and nuclear observations
• Properties of hot finite nuclei and associated correlations with infinite nuclear matter