Chiral thermodynamics of nuclear matter
arXiv:1111.2791 · doi:10.1016/j.nuclphysa.2012.01.003
Abstract
The free energy and the equation of state of isospin-asymmetric nuclear matter are calculated at finite temperature up to three loop order in the framework of in-medium chiral perturbation theory, systematically incorporating one- and two-pion exchange dynamics to this order. Effects from the two-pion exchange with explicit Δ-isobar excitation are included, as well as three-body forces. We construct the phase diagram of nuclear matter for different proton fractions x_p and investigate the dependence of nuclear matter properties on the isospin-asymmetry. A detailed study of the liquid-gas phase transition is performed. For isospin-symmetric nuclear matter we find a critical temperature of 15.1 MeV; as the isospin-asymmetry is increased, the liquid-gas coexistence region decreases until it disappears at x_p \approx 0.05, while nuclear matter becomes unbound at x_p \approx 0.12. The quadratic expansion of the free energy in the asymmetry parameter δ is a good approximation at low temperature even for large δ. An estimate of chiral four-body correlations in nuclear and neutron matter is also performed and the corrections from such four-body interactions are found to be small.
22 pages, 15 figures
References in corpus (13)
- Shapiro delay measurement of a two solar mass neutron star
- Isotopic dependence of the giant monopole resonance in the even-A ^{112-124}Sn isotopes and the asymmetry term in nuclear incompressibility
- Higher-order effects on the incompressibility of isospin asymmetric nuclear matter
- Density dependence of the nuclear symmetry energy: a microscopic perspective
- Four-nucleon force using the method of unitary transformation
- In-medium chiral condensate beyond linear density approximation
- Four-nucleon system with -isobar excitation
- Liquid-gas phase transition in nuclear matter from realistic many-body approaches
- Effective interaction dependence of the liquid-gas phase transition in symmetric nuclear matter
- Thermodynamic properties of nuclear matter with three-body forces
- Critical temperature for the nuclear liquid-gas phase transition (from multifragmentation and fission)
- Chiral condensate in neutron matter
- Thermodynamics of the in-medium chiral condensate
Cited by in corpus (38)
- Equations of state for supernovae and compact stars
- QCD and strongly coupled gauge theories: challenges and perspectives
- Neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory
- Three-body forces: From cold atoms to nuclei
- Neutron matter from chiral effective field theory interactions
- Role of Vector Interaction and Axial Anomaly in the PNJL Modeling of the QCD Phase Diagram
- Microscopic calculations and energy expansions for neutron-rich matter
- Nuclear chiral dynamics and thermodynamics
- Thermodynamics of isospin-asymmetric nuclear matter from chiral effective field theory
- Non-congruence of the nuclear liquid-gas and deconfinement phase transitions
- Nuclear thermodynamics from chiral low-momentum interactions
- Theoretical and Experimental Constraints for the Equation of State of Dense and Hot Matter
- Evidence against a strong first-order phase transition in neutron star cores: impact of new data
- Dense baryonic matter: constraints from recent neutron star observations
- A comparative study of statistical models for nuclear equation of state of stellar matter
- Functional renormalization group studies of nuclear and neutron matter
- From asymmetric nuclear matter to neutron stars: a functional renormalization group study
- Regulator Artifacts in Uniform Matter for Chiral Interactions
- Microscopic equation of state of hot nuclear matter for numerical relativity simulations
- Neutron matter at finite temperature based on chiral effective field theory interactions
- Chiral Mirror-Baryon-Meson Model and Nuclear Matter beyond Mean-Field
- Thermodynamic phases and mesonic fluctuations in a chiral nucleon-meson model
- Thermal Properties of Asymmetric Nuclear Matter
- Microscopically constrained mean field models from chiral nuclear thermodynamics
- Chiral four-body interactions in nuclear matter
- Functional renormalization group approach to neutron matter
- Setting nonperturbative uncertainties on finite-temperature properties of neutron matter
- Hot and Dense Matter Equation of State Probability Distributions for Astrophysical Simulations
- Nuclear thermodynamics and the in-medium chiral condensate
- Hot and dense matter beyond relativistic mean field theory
- Zero-temperature limit and statistical quasiparticles in many-body perturbation theory
- An in-medium chiral power counting for nuclear matter and some applications
- Investigation of constraints on few-neutron forces in neutron matter by empirical information on the neutron skin of 48Ca and 208Pb
- Finite-temperature infinite matter with effective-field-theory-inspired energy-density functionals
- Dense nucleonic matter and the renormalization group
- Properties of hot finite nuclei and associated correlations with infinite nuclear matter
- Isospin-Asymmetry Dependence of the Thermodynamic Nuclear Equation of State in Many-Body Perturbation Theory
- Origins and Impacts of High-Density Symmetry Energy