Describing the speed of sound peak of isospin-asymmetric cold strongly interacting matter using effective models
arXiv:2310.13130 · doi:10.1140/epja/s10050-024-01469-2
Abstract
The non-monotonic behavior of the speed of sound for isospin imbalanced strongly interacting matter, found by recent lattice QCD simulations, can be reproduced within the Nambu--Jona-Lasinio model and Linear Sigma Model with quarks when the couplings become isospin chemical potential-dependent. The introduction of medium-dependent couplings can potentially affect the equivalence between the thermodynamic relations and their definitions from statistical mechanics. We describe the procedure to compensate for the introduction of medium-dependent couplings to preserve the correct thermodynamic identities. We find the isospin chemical potential dependence for the couplings from the isospin density LQCD data and, after finding the compensating function to correctly describe the pressure, we show that the description of the square of the speed of sound reported by LQCD is well reproduced when using the found medium-dependent couplings in both models.
arXiv comment18 pages, 7 figures. Replaced to match the published version
References in corpus (83)
- Neutron Star Structure and the Equation of State
- The Physics of Neutron Stars
- Neutron Star Observations: Prognosis for Equation of State Constraints
- The phase diagram of dense QCD
- The QCD phase diagram for external magnetic fields
- Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals
- QCD at finite isospin density
- Polyakov loop, diquarks and the two-flavour phase diagram
- "Strongly interacting matter in magnetic fields": an overview
- Massive gluons and quarks and the equation of state obtained from SU(3) lattice QCD
- Lattice QCD at Finite Density -- An introductory review
- The Importance of Asymptotic Freedom for the Pseudocritical Temperature in Magnetized Quark Matter
- Pion Superfluidity and Meson Properties at Finite Isospin Density
- QCD at finite isospin density: from pion to quark-antiquark condensation
- QCD-like Theories at Finite Baryon and Isospin Density
- QCD phase diagram for nonzero isospin-asymmetry
- Flavor-Mixing Effects on the QCD Phase Diagram at non-vanishing Isospin Chemical Potential: One or Two Phase Transitions?
- BEC-BCS Crossover in the Nambu--Jona-Lasinio Model of QCD
- Isospin Chemical Potential and the QCD Phase Diagram at Nonzero Temperature and Baryon Chemical Potential
- Chiral phase structure and critical end point in QCD
- A calculation of the QCD phase diagram at finite temperature, and baryon and isospin chemical potentials
- Inverse magnetic catalysis for the chiral transition induced by thermo-magnetic effects on the coupling constant
- Phase diagram of a cold polarized Fermi gas
- Thermodynamics of the PNJL model with nonzero baryon and isospin chemical potentials
- Thermo-magnetic effects in quark matter: Nambu--Jona-Lasinio model constrained by lattice QCD
- Status and initial physics performance studies of the MPD experiment at NICA
- Medium effects in strange quark matter and strange stars
- Thermal Pions at Finite Isospin Chemical Potential
- pole mass calculation in a strong magnetic field and lattice constraints
- Fluctuations in the quark-meson model for QCD with isospin chemical potential
- Pion condensation in electrically neutral cold matter with finite baryon density
- Pion condensation in quark matter with finite baryon density
- Meson condensation
- Thermodynamic consistency, quark mass scaling, and properties of strange matter
- Scrutinizing the pion condensed phase
- Phase Structure of Nambu-Jona-Lasinio Model at Finite Isospin Density
- QCD phase transitions via a refined truncation of Dyson-Schwinger equations
- Three-flavor Nambu--Jona-Lasinio model at finite isospin chemical potential
- Pion Condensation in Baryonic Matter: from Sarma Phase to Larkin-Ovchinnikov-Fudde-Ferrell Phase
- Thermo-magnetic evolution of the QCD strong coupling
- Equation of state and speed of sound of isospin-asymmetric QCD on the lattice
- Neutral meson properties in hot and magnetized quark matter: a new magnetic field independent regularization scheme applied to NJL-type model
- The fate of pion condensation in quark matter: from the chiral limit to the physical pion mass
- Pion condensation and phase diagram in the Polyakov-loop quark-meson model
- Three-loop hard-thermal-loop perturbation theory thermodynamics at finite temperature and finite baryonic and isospin chemical potential
- Thermodynamics of (2+1)-flavor strongly interacting matter at nonzero isospin
- QCD phase diagram at finite baryon and isospin chemical potentials in Polyakov loop extended quark meson model with vector interaction
- Quark mass and isospin dependence of the deconfining critical temperature
- Peaks of sound velocity in two color dense QCD: quark saturation effects and semishort range correlations
- Dualities in dense quark matter with isospin, chiral and chiral isospin imbalance in the framework of the large-N limit of the NJL model
- Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature
- QCD at finite isospin density: chiral perturbation theory confronts lattice data
- Chiral imbalanced hot and dense quark matter: NJL analysis at the physical point and comparison with lattice QCD
- QCD phase diagram in a magnetized medium from the chiral symmetry perspective: The linear sigma model with quarks and the Nambu--Jona-Lasinio model effective descriptions
- Inhomogeneous charged pion condensation in chiral asymmetric dense quark matter in the framework of NJL model
- Cold QCD at finite isospin density: confronting effective models with recent lattice data
- Deconfinement Transition at High Isospin Chemical Potential and Low Temperature
- Dualities and inhomogeneous phases in dense quark matter with chiral and isospin imbalances in framework of effective model
- Charged pion condensation and duality in dense and hot chirally and isospin asymmetric quark matter in the framework of NJL model
- Sound velocity peak and conformality in isospin QCD
- Two-flavor condensates in chiral dynamics: temperature and isospin density effects
- A consistent thermodynamic treatment for quark mass density-dependent model
- The QCD phase diagram from Schwinger-Dyson Equations
- Thermodynamics and susceptibilities of isospin imbalanced QCD matter
- Phase Diagram of Dynamical Twisted Mass Wilson Fermions at Finite Isospin Chemical Potential
- A field theoretical model for quarkyonic matter
- High-Energy Phase Diagrams with Charge and Isospin Axes under Heavy-Ion Collision and Stellar Conditions
- Duality between chiral symmetry breaking and charged pion condensation at large : Consideration of an NJL model with baryon-, isospin- and chiral isospin chemical potentials
- The dual properties of chiral and isospin asymmetric dense quark matter formed of two-color quarks
- Hot QCD at finite isospin density: confronting SU(3) Nambu-Jona-Lasinio model with recent lattice data
- Compact stars with a quark core within NJL model
- Condensates and pressure of two-flavor chiral perturbation theory at nonzero isospin and temperature
- QCD equation of state at finite isospin density from the linear sigma model with quarks: The cold case
- Isospin symmetry breaking and baryon-isospin correlations from PolyakovNambuJona-Lasinio model
- Multicomponent meson superfluids in chiral perturbation theory
- Influence of chiral asymmetry on phase structure of the two-color quark matter
- Non-strange quark stars within resummed QCD
- On the critical end point in a two-flavor linear sigma model coupled to quarks
- Quark and pion condensates at finite isospin density in chiral perturbation theory
- Pion condensation in the two--flavor chiral quark model at finite baryochemical potential
- 3-dimensional QCD phase diagram with pion condensate in the NJL model
- Cold quark matter in a quasiparticle model: thermodynamic consistency and stellar properties
- On the effective lagrangian at nonzero isospin chemical potential