Anomalous thermodynamics and phase transitions of neutron-star matter

Abstract

In this letter we show that the presence of the long-range Coulomb force in dense stellar matter implies that the total charge cannot be associated with a chemical potential, even if it is a conserved quantity. As a further consequence, the analytical properties of the partition sum are modified, changing the order of the phase transitions and affecting the possible occurrence of critical behaviours. The peculiar thermodynamic properties of the system can be understood introducing a model hamiltonian in which each charge is independently neutralized by a uniform background of opposite charge.

4 pages - GANIL, LPC

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Cited by in corpus (25)

• Equations of state for supernovae and compact stars
• Properties of the nuclear medium
• Thermodynamics of isospin-asymmetric nuclear matter from chiral effective field theory
• The pasta phase within density dependent hadronic models
• Non-congruence of the nuclear liquid-gas and deconfinement phase transitions
• Bayesian analysis of the crust-core transition with a compressible liquid-drop model
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• Hyperons in neutron stars and supernova cores
• Conditions for Phase Equilibrium in Supernovae, Proto-Neutron and Neutron Stars
• Strangeness-driven phase transition in (proto)- neutron star matter
• Neutron star collapse and gravitational waves with a non-convex equation of state
• Exact versus Taylor-expanded energy density in the study of the neutron star crust-core transition
• A Bayesian analysis of the properties of hybrid stars with the NJL model
• Ensemble in-equivalence in supernova matter within a simple model
• Effects of finite size and symmetry energy on the phase transition of stellar matter at subnuclear densities
• Effect of the Coulomb interaction on the liquid-gas phase transition of nuclear matter
• Charged Ising Model of Neutron Star Matter
• Phase diagram of neutron-rich nuclear matter and its impact on astrophysics
• Crust (Unified) Tool for Equation-of-state Reconstruction (CUTER) v2
• Low-Density Instability of Multi-Component Matter with Trapped Neutrinos
• Spinodal instability growth in new stochastic approaches
• Some aspects of the phase diagram of nuclear matter relevant to compact stars
• Thermodynamics of compact-star matter within an ising approach
• Neutron-rich nuclei and the equation of state of stellar matter
• From multifragmentation to supernovae and neutron stars