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We investigate the magnetism of QCD matter and pion mass under magnetic field considering the contribution from the tensor-type spin polarization and the anomalous magnetic moment (AMM) of quarks. It is found that the tensor-type spin…

High Energy Physics - Phenomenology · Physics 2022-07-27 Fan Lin , Kun Xu , Mei Huang

In this work we analyze the finite-volume and magnetic effects on the phase structure of a generalized version of Nambu--Jona-Lasinio model with three quark flavors. By making use of mean-field approximation and Schwinger's proper-time…

High Energy Physics - Phenomenology · Physics 2019-04-09 L. M. Abreu , E. B. S. Corrêa , C. A. Linhares , A. P. C. Malbouisson

A nonlocal covariant extension of the two-flavor Nambu and Jona-Lasinio (NJL) model is constructed, with built-in constraints from the running coupling of QCD at high-momentum and instanton physics at low-momentum scales. Chiral low-energy…

High Energy Physics - Phenomenology · Physics 2010-04-15 T. Hell , S. Roessner , M. Cristoforetti , W. Weise

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…

High Energy Physics - Phenomenology · Physics 2018-10-17 J. Moreira , J. Morais , B. Hiller , A. A. Osipov , A. H. Blin

The effect of rotation on the formation of the magnetic dual chiral density wave (\MD) in a dense and magnetized cold quark matter is studied. This phase is supposed to exist in the extreme conditions prevailing, e.g., in a neutron star.…

Nuclear Theory · Physics 2023-10-04 H. Mortazavi Ghalati , N. Sadooghi

The effect of the isospin/charge asymmetry and an external magnetic field in the location of the critical end point (CEP) in the QCD phase diagram is investigated. By using the 2+1 flavor Nambu--Jona-Lasinio model with Polyakov loop (PNJL),…

High Energy Physics - Phenomenology · Physics 2015-08-10 Pedro Costa , Márcio Ferreira , Constança Providência , Hubert Hansen , Débora P. Menezes

In this article we study chiral symmetry breaking for quark matter in a magnetic background, $\bm B$, at finite temperature and quark chemical potential, $\mu$, making use of the Ginzburg-Landau effective action formalism. As a microscopic…

High Energy Physics - Phenomenology · Physics 2015-06-18 M. Ruggieri , L. Oliva , P. Castorina , R. Gatto , V. Greco

We study the thermo-magnetic properties of the strong coupling constant G and quark mass M entering the Nambu-Jona-Lasinio model. For this purpose, we compute the quark condensate and compare it to lattice QCD (LQCD) results to extract the…

High Energy Physics - Phenomenology · Physics 2016-09-28 Alejandro Ayala , C. A. Dominguez , L. A. Hernandez , M. Loewe , Alfredo Raya , J. C. Rojas , C. Villavicencio

Magnetic catalysis is the enhancement of a condensate due to the presence of an external magnetic field. Magnetic catalysis at $T=0$ is a robust phenomenon in low-energy theories and models of QCD as well as in lattice simulations. We…

High Energy Physics - Phenomenology · Physics 2021-06-08 Jens O. Andersen

We study consistently the effects of magnetic field on hot and dense matter. In particular, we look for differences that arise due to assumptions that reproduce the conditions produced in particle collisions or astrophysical scenarios, such…

Nuclear Theory · Physics 2023-09-28 J. Peterson , P. Costa , R. Kumar , V. Dexheimer , R. Negreiros , C. Providencia

We investigate the static $Q\bar{Q}$ potential at zero and finite temperature in the presence of a constant and uniform external magnetic field $\vec{B}$, for several values of the lattice spacing and for different orientations with respect…

High Energy Physics - Lattice · Physics 2016-11-15 Claudio Bonati , Massimo D'Elia , Marco Mariti , Michele Mesiti , Francesco Negro , Andrea Rucci , Francesco Sanfilippo

We have pointed out the possibility of quantum Hall effect or quantum patterns of transportation in a degenerate strongly magnetized quark matter, which might be expected inside a highly dense compact star. An anisotropic pattern of…

High Energy Physics - Phenomenology · Physics 2021-03-30 Jayanta Dey , Aritra Bandyopadhyay , Akash Gupta , Naman Pujari , Sabyasachi Ghosh

We discuss the hard dense loop perturbation theory approach for studying the thermodynamics of strongly magnetized dense quark matter. The free energy of quarks and gluons have been calculated for one-loop quark and gluon self-energies,…

Nuclear Theory · Physics 2025-07-01 Sarthak Satapathy , Sumit , Salman Ahamad Khan

In this work, we compute the hard thermal loop pressure of quark-gluon plasma within strong magnetic field approximation at one-loop order. Magnetic field breaks the rotational symmetry of the system. As a result, the pressure of QGP…

High Energy Physics - Phenomenology · Physics 2021-04-06 Bithika Karmakar , Ritesh Ghosh , Aritra Bandyopadhyay , Najmul Haque , Munshi G Mustafa

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

Some magnetic aspects of QCD are discussed at finite density and temperature. Possibility of spontaneous magnetization is studied within Landau Fermi-liquid theory, and the important roles of the screening effects for gluon propagation are…

High Energy Physics - Phenomenology · Physics 2011-09-30 Toshitaka Tatsumi

The magnetized phase diagram for three-flavor quark matter is studied within the Polyakov extended Nambu--Jona-Lasinio model. The order parameters are analyzed with special emphasis on the strange quark condensate. We show that the presence…

High Energy Physics - Phenomenology · Physics 2018-02-07 Márcio Ferreira , Pedro Costa , Constança Providência

The strange quark matter under strong magnetic fields and finite temperatures is studied in the framework of the MIT Bag model. Matter under such conditions is believed to be present in the core of dense astrophysical objects, like Neutron…

High Energy Astrophysical Phenomena · Physics 2019-02-08 Ernesto López Fune

We study the phase structure of the unpolarized and polarized two-flavor quark matters at zero and finite temperatures within the Nambu--Jona-Lasinio (NJL) model. We focus on the region, which includes the coexisting phase of…

High Energy Physics - Phenomenology · Physics 2007-09-17 M. Inui , H. Kohyama , A. Niégawa

The thermodynamics of finite size quark matter in the quasiparticle model is self-consistently constructed by an effective bag function, which presents the medium effect to the confinement. We obtained completely analytic surface tension in…

High Energy Physics - Phenomenology · Physics 2023-04-26 Yu-Ying He , Xin-Jian Wen