QCD chiral condensate and pseudoscalar-meson properties in the nuclear medium at finite temperature

Abstract

The pion and kaon properties in a nuclear medium at nonvanishing temperature as well as the QCD chiral condensate in the presence of a magnetic field for various baryon densities are studied in the Nambu-Jona-Lasinio (NJL) model with the help of the proper-time regularization (PTR) scheme, simulating a QCD confinement. The density dependent of the quark mass in symmetric nuclear matter is obtained from the quark-meson coupling (QMC) model, which shares the same covariant feature with the NJL model, at quark level. We then analyze the QCD chiral condensates, and dynamical masses for various baryon densities at finite temperature and magnetic field as well as the pion and kaon masses, pion and kaon weak-decay constants, pion-and kaon-quark coupling constants, and wave function renormalization factors for various baryon densities at finite temperature. We find that the QCD chiral condensates suppress with increasing temperature and baryon density and enhance under the presence of a magnetic field, which are consistent with other model predictions. Interestingly, the wave function renormalization factors for the pion and kaon increase with respect to temperature and reduce as the baryon density increases are found.

11 pages, 14 figures, 1 table, adding sentences and modifying figures

References in corpus (23)

• The Chiral Magnetic Effect
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Color superconductivity in dense quark matter
• The QCD phase diagram at nonzero quark density
• The Importance of Asymptotic Freedom for the Pseudocritical Temperature in Magnetized Quark Matter
• Inverse magnetic catalysis in the (2+1)-flavor Nambu--Jona-Lasinio and Polyakov--Nambu--Jona-Lasinio models
• The chiral condensate in a constant electromagnetic field
• NJL-type models in the presence of intense magnetic fields: the role of the regularization prescription
• Recent progresses on QCD phases in a strong magnetic field -- views from Nambu--Jona-Lasinio model
• Two-colour QCD phases and the topology at low temperature and high density
• Inhomogeneous chiral condensates in three-flavor quark matter
• The pole and screening masses of neutral pion in hot and magnetized medium: a comprehensive study in the Nambu--Jona-Lasinio model
• Extension of the Nambu--Jona-Lasinio model at high densities and temperatures by using an implicit regularization scheme
• Chiral restoration at finite T under the magnetic field with the meson-loop corrections
• Thermal quarks and gluon propagators in two-color dense QCD
• Thermal properties of light mesons from holography
• Thermodynamics from the quark condensate
• Real-time lattice gauge theory actions: unitarity, convergence, and path integral contour deformations
• Masses and decay constants of (axial-)vector mesons at finite chemical potential
• Cold magnetized quark matter at finite density in a nonlocal chiral quark model
• Charmed mesons at finite temperature and chemical potential
• Electroweak properties of kaons in a nuclear medium
• Chirality imbalance and chiral magnetic effect under a parallel electromagnetic field

Cited by in corpus (1)

• Nucleon axial-vector coupling constant in magnetar environments