Pasta phases within the QMC model

Abstract

In this work the low density regions of nuclear and neutron star matter are studied. The search for the existence of pasta phases in this region is performed within the context of the quark-meson coupling (QMC) model, which incorporates quark degrees of freedom. Fixed proton fractions are considered, as well as nuclear matter in beta equilibrium at zero temperature. We discuss the recent attempts to better understand the surface energy in the coexistence phases regime and we present results that show the existence of the pasta phases subject to some choices of the surface energy coefficient. We also analyze the influence of the nuclear pasta on some neutron star properties. The equation of state containing the pasta phase will be part of a complete grid for future use in supernova simulations.

References in corpus (16)

• Shapiro delay measurement of a two solar mass neutron star
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• Phase transition dynamics for baryon-dense matter
• The pasta phase within density dependent hadronic models
• Neutron stars with hyperon cores: stellar radii and EOS near nuclear density
• Effects of the symmetry energy on properties of neutron star crusts near the neutron drip density
• Light clusters, pasta phases and phase transitions in core-collapse supernova matter
• Impact of nuclear "pasta" on neutrino transport in collapsing stellar cores
• The pasta phase and its consequences on neutrino opacities

Cited by in corpus (14)

• Phases of dense matter in compact stars
• Quark-Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond
• Combined Rastall and Rainbow theories of gravity with applications to neutron stars
• Nuclear Statistical Equilibrium Equation of State for Core Collapse
• Impact of the neutron-star deformability on equation of state parameters
• Hadron-quark mixed phase in the quark-meson coupling model
• Rapidly rotating neutron stars in $f(R,T)$ gravity
• Hyperon threshold and stellar radii
• Hyperons in the pasta phase
• Nuclear pasta and symmetry energy in the relativistic point-coupling model
• Thermal effects in hot and dilute homogeneous asymmetric nuclear matter
• The outer crust of a cold, non-accreting neutron star within the Quark-Meson Coupling (QMC) model
• RMF models with $\sigma$-scaled hadron masses and couplings for description of heavy-ion collisions below 2A GeV
• Effect of the equation of state for dilute neutron matter on the composition of the inner crust of neutron stars