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We compute the effect of the chiral phase transition of QCD on the axion mass and self-coupling; the coupling of the axion to the quarks at finite temperature is described within the Nambu-Jona-Lasinio model. We find that the axion mass…

高能物理 - 唯象学 · 物理学 2019-07-23 Zhen-Yan Lu , Marco Ruggieri

We investigate the combined effect of the repulsive vector interaction and the positive electric chemical potential on the chiral phase transition by considering neutral color superconductivity (CSC). The chiral condensate, diquark…

高能物理 - 唯象学 · 物理学 2009-08-13 Zhao Zhang , Teiji Kunihiro

Equation of state of baryon rich quark matter is studied within the SU(3) Nambu-Jona-Lasinio model with flavour mixing interaction. Possible bound states (strangelets) and chiral phase transitions in this matter are investigated at various…

高能物理 - 唯象学 · 物理学 2009-10-31 I. N. Mishustin , L. M. Satarov , H. Stoecker , W. Greiner

We have simulated lattice QCD with 2 flavours of massless staggered quarks. An irrelevant chiral 4-fermion interaction was added to the standard quark action to allow us to simulate at zero quark mass. Thermodynamics was studied on lattices…

高能物理 - 格点 · 物理学 2009-11-07 J. B. Kogut , D. K. Sinclair

We investigate a chirally imbalanced medium in the context of the two-flavor Nambu--Jona-Lasinio model using both the large-$N_c$ (LN) and beyond large-$N_c$ (BLN) approximations. To incorporate BLN effects, we consider the optimized…

Nambu-Jona-Lasinio-type models are often employed as low-energy models for the theory of the strong interaction to analyze its phase structure at finite temperature and quark chemical potential. In particular at low temperature and large…

高能物理 - 唯象学 · 物理学 2018-05-02 Jens Braun , Marc Leonhardt , Martin Pospiech

We extend the modified Nambu-Jona-Lasinio (NJL) model -- incorporating exchange interactions via the Fierz transformation -- to finite temperatures in both two- and three-flavor scenarios, and investigate the properties of protoquark stars…

高能物理 - 唯象学 · 物理学 2026-02-18 Wen-Li Yuan , Nobutoshi Yasutake , Renxin Xu

The chiral condensate and dressed Polyakov loop at finite temperature and density have been investigated in the framework of Nf = 2+1 Nambu-Jona-Lasinio (NJL) model with two degenerate u, d quarks and one strange quark. In the case of…

高能物理 - 唯象学 · 物理学 2015-05-27 Fukun Xu , Hong Mao , Tamal K. Mukherjee , Mei Huang

We investigate the phase diagram of the so-called Polyakov--Nambu--Jona-Lasinio (PNJL) model at finite temperature and nonzero chemical potential. The calculations are performed in the light and strange quark sectors ($u$, $d$, $s$), which…

高能物理 - 唯象学 · 物理学 2015-03-20 P. Costa , C. A. de Sousa , M. C. Ruivo , H. Hansen , O. Oliveira , P. J. Silva

The flavor-dependent quark-antiquark contact interactions, induced by vacuum polarization and recently derived for flavor U(3) Nambu-Jona-Lasinio model, are articulated with the resulting mixing effects emerging from flavor symmetry…

高能物理 - 唯象学 · 物理学 2025-08-11 F. L. Braghin

In this article we study spontaneous chiral symmetry breaking for quark matter in the background of static and homogeneous parallel electric field $\bm E$ and magnetic field $\bm B$. We use a Nambu-Jona-Lasinio model with a local kernel…

高能物理 - 唯象学 · 物理学 2016-05-25 M. Ruggieri , G. X. Peng

The phase diagram for quark matter is investigated within a simple Nambu-Jona-Lasinio model without vector correlations. It is found that the phase structure in the temperature-density plane depends sensitively on the parametrization of the…

高能物理 - 唯象学 · 物理学 2014-11-17 D. Blaschke , M. K. Volkov , V. L. Yudichev

The properties of the ground state of relativistic matter in a magnetic field are examined within the framework of a Nambu-Jona-Lasinio model. The main emphasis of this study is the normal ground state, which is realized at sufficiently…

高能物理 - 唯象学 · 物理学 2015-03-18 E. V. Gorbar , V. A. Miransky , I. A. Shovkovy

We analyse the effects of the light and strange current quark masses on the phase diagram of QCD at finite temperature and vanishing baryonic chemical potential, computing the speed of sound, the trace anomaly of the energy momentum tensor…

高能物理 - 唯象学 · 物理学 2018-10-17 J. Moreira , J. Morais , B. Hiller , A. A. Osipov , A. H. Blin

Quantum chromodynamics with two zero mass flavors is expected to exhibit a phase transition with O(4) critical behavior. Fixing the universality class is important for phenomenology and for facilitating the extrapolation of simulation data…

We investigate the rotating quark matter in the three-flavor Nambu and Jona-Lasinio (NJL) model. The chiral condensation, spin polarization and number susceptibility of the light and strange quarks are carefully studied at finite…

高能物理 - 唯象学 · 物理学 2021-11-24 Fei Sun , Anping Huang

We show that the nonlocal two-flavor Nambu--Jona-Lasinio model predicts the enhancement of both chiral and axial symmetry breaking as the chiral imbalance of hot QCD matter, regulated by a chiral chemical potential $\mu_5$, increases. The…

高能物理 - 唯象学 · 物理学 2020-07-22 Marco Ruggieri , Maxim N. Chernodub , Zhen-Yan Lu

We study the inhomogeneous phase of a two-flavor quark matter under rotation at finite temperature and density using the Nambu-Jona-Lasinio model. To do this, we consider the chiral broken phase, in particular, described by the so-called…

核理论 · 物理学 2023-12-12 S. M. A. Tabatabaee

We study the phase diagram of the three flavor Polyakov-Nambu-Jona Lasinio (PNJL) model and in particular the interplay between chiral symmetry restoration and deconfinement crossover. We compute chiral condensates, quark densities and the…

高能物理 - 唯象学 · 物理学 2008-11-26 M. Ciminale , R. Gatto , N. D. Ippolito , G. Nardulli , M. Ruggieri

The supersymmetric version of the Nambu-Jona-Lasinio model is investigated in connection with the chiral symmetry breaking induced by a soft SUSY breaking term. It is found that the broken chiral symmetry due to the soft breaking term is…

高能物理 - 唯象学 · 物理学 2009-10-31 J. Hashida , T. Muta , K. Ohkura