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Employing a field dependent three-momentum cut-off regularization technique, we study the phase structure and mesonic masses using the $2$-flavour Nambu-Jona Lasinio model at finite temperature and density in presence of arbitrary external…

Nuclear Theory · Physics 2019-07-10 Nilanjan Chaudhuri , Snigdha Ghosh , Sourav Sarkar , Pradip Roy

We study some bulk thermodynamical characteristics, meson properties and the nucleon as a baryon number one soliton in a hot quark matter in the NJL model as well as in a hot nucleon matter in a hybrid NJL model in which the Dirac sea of…

High Energy Physics - Phenomenology · Physics 2009-10-28 J. Berger , Chr. -V. Christov

Spontaneous magnetization and magnetic susceptibility originated from the pseudovector-type four-point interaction between quarks are calculated in quark matter with zero temperature and finite quark chemical potential by using the…

High Energy Physics - Phenomenology · Physics 2018-05-23 M. Morimoto , Y. Tsue , J. da Providencia , C. Providencia , M. Yamamura

In this paper, we study the pseudo-Wigner solution of the quark gap equation with a recently proposed algorithm in the framework of the (2+1)-flavor Nambu-Jona-Lasinio (NJL) model. We find that for the current quark mass $m_{\rm u,d}=5.5$…

High Energy Physics - Phenomenology · Physics 2019-04-17 Cheng-Ming Li , Pei-Lin Yin , Hong-Shi Zong

We study the two flavour non-local Nambu\textemdash Jona-Lasinio (NJL) model in the presence of a magnetic field and explore the chiral crossover in presence of a non-local form of the 't Hooft determinant term. Its coupling is governed by…

High Energy Physics - Phenomenology · Physics 2021-12-21 Mahammad Sabir Ali , Chowdhury Aminul Islam , Rishi Sharma

We investigate the vacuum realignment for chiral symmetry breaking and color superconductivity at finite density in Nambu-Jona-Lasinio model in a variational method. The treatment allows us to investigate simultaneous formation of…

High Energy Physics - Phenomenology · Physics 2009-11-10 Amruta Mishra , Hiranmaya Mishra

We study the chiral phase transition of the two-flavor Nambu-Jona-Lasinio (NJL) model in a rotating sphere, which includes both rotation and finite size effects. We find that rotation leads to a suppression of the chiral condensate at a…

Nuclear Theory · Physics 2020-04-29 Zheng Zhang , Chao Shi , Xiaofeng Luo , Hong-Shi Zong

We compute the electric-current susceptibility \chi of hot quark-gluon matter in an external magnetic field B. The difference between the susceptibilities measured in the directions parallel and perpendicular to the magnetic field is…

High Energy Physics - Phenomenology · Physics 2014-11-20 Kenji Fukushima , Dmitri E. Kharzeev , Harmen J. Warringa

We present results from numerical simulations of the Nambu-Jona-Lasinio model with an SU(2)xSU(2) chiral symmetry and N_c=4,8, and 16 quark colors at nonzero temperature. We performed the simulations by utilizing the hybrid Monte Carlo and…

High Energy Physics - Lattice · Physics 2009-11-11 Costas Strouthos , Stavros Christofi

Various thermodynamic quantities and the phase diagram of strongly interacting hot and dense magnetized quark matter are obtained with the $ 2 $-flavour Nambu-Jona-Lasinio model with Polyakov loop considering finite values of the anomalous…

Nuclear Theory · Physics 2020-08-27 Nilanjan Chaudhuri , Snigdha Ghosh , Sourav Sarkar , Pradip Roy

We investigate quark matter at finite temperature and finite chemical potential as an example for a relativistic many-particle quantum system. Special relativity is realized through the front form that allows for a Hamiltonian formulation…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Beyer , S. Mattiello , T. Frederico , H. J. Weber

The compressibility of magnetized quark matter is investigated in the SU(2) NJL model. The increases of the chemical potential and the temperature can reduce the compressibility, and lead to the much stiffer equation of state. The variation…

High Energy Physics - Phenomenology · Physics 2021-12-22 Li Yang , Xin-Jian Wen

We investigate the neighbourhood of the chiral phase transition in a lattice Nambu--Jona-Lasinio model, using both Monte Carlo methods and lattice Schwinger-Dyson equations.

High Energy Physics - Lattice · Physics 2008-11-26 A. Ali Khan , M. Goeckeler , R. Horsley , P. E. L. Rakow , G. Schierholz , H. Stueben

Properties of cold nuclear matter are studied within a generalized Nambu-Jona-Lasinio model formulated on the level of constituent nucleons. The model parameters are chosen to reproduce simultaneously the observed nucleon and pion masses in…

High Energy Physics - Phenomenology · Physics 2009-11-10 I. N. Mishustin , L. M. Satarov , W. Greiner

With the two flavor Nambu-Jona-Lasinio (NJL) model we carry out a phenomenological study on the chiral phase structure, mesonic properties and transport properties in a momentum-space anisotropic quark matter. To calculate transport…

High Energy Physics - Phenomenology · Physics 2022-01-13 He-Xia Zhang , Yu-Xin Xiao , Jin-Wen Kang , Ben-Wei Zhang

A review of the recent results obtained in the Nambu -- Jona-Lasinio model is given. In particular, the effect of screening of meson fields at finite temperature or density is analyzed and the formulation of a chirally invariant transport…

High Energy Physics - Phenomenology · Physics 2007-05-23 Wojciech Florkowski

We investigate the chiral phase transition in rotating quark matter with chiral imbalance using the two-flavor Nambu-Jona-Lasinio (NJL) model regularized by the Medium Separation Scheme (MSS). Our numerical calculations demonstrate that the…

High Energy Physics - Phenomenology · Physics 2026-03-31 Huang-Jing Zheng , Peng Nan , Sheng-Qin Feng

We discuss in this note simultaneous existence of chiral symmetry breaking and color superconductivity at finite temperature and density in a Nambu-Jona-Lasinio type model. The methodology involves an explicit construction of a variational…

High Energy Physics - Phenomenology · Physics 2009-10-31 Hiranmaya Mishra , Jitendra C. Parikh

We investigate the effect of the inverse magnetic catalysis (IMC) on the charged $\rho$ meson condensation at finite temperature in the framework of the Nambu--Jona-Lasinio model, where mesons are calculated to the leading order of $1/N_c$…

High Energy Physics - Phenomenology · Physics 2016-12-21 Hao Liu , Lang Yu , Maxim Chernodub , Mei Huang

We study the properties of the shear viscosity coefficient of quark matter near the chiral phase transition at finite temperature and chemical potential, and the kinds of high temperature, high density and strong magnetic field background.…

High Energy Physics - Phenomenology · Physics 2023-12-29 Yi-Wei Qiu , Sheng-Qin Feng , Xue-Qiang Zhu