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It is analyzed the effects of a hot and magnetized medium on the axion mass, self-coupling and topological susceptibility when in presence of an anisotropic external magnetic field along the $z$-direction, within the Nambu--Jona-Lasinio…

高能物理 - 唯象学 · 物理学 2019-11-26 Aritra Bandyopadhyay , Ricardo L. S. Farias , Bruno S. Lopes , Rudnei O. Ramos

In this article, we calculate the magnetization and other thermodynamical quantities for strongly magnetized quark matter within the Nambu-Jona-Lasinio model at zero temperature. We assume two scenarios, chemically equilibrated charge…

高能物理 - 唯象学 · 物理学 2018-04-04 Sidney S. Avancini , Veronica Dexheimer , Ricardo L. S. Farias , Varese S. Timóteo

In this work, a self-consistent thermodynamic approach to micromagnetism is presented. The magnetic degrees of freedom are modeled using the Landau-Lifshitz-Baryakhtar theory, that separates the different contributions to the magnetic…

材料科学 · 物理学 2014-10-29 Mykola Dvornik , Arne Vansteenkiste , Bartel Van Waeyenberge

A possibility of formation of static dual scalar and pseudoscalar density wave condensates in dense quark matter is considered for the Nambu--Jona-Lasinio model in an external magnetic field. Within a mean-field approximation, the effective…

高能物理 - 唯象学 · 物理学 2014-11-21 I. E. Frolov , V. Ch. Zhukovsky , K. G. Klimenko

We study the potential of the axion, $a$, of Quantum Chromodynamics, in the two-flavor color superconducting phase of cold and dense quark matter. We adopt a Nambu-Jona-Lasinio-like model. Our interaction contains two terms, one preserving…

高能物理 - 唯象学 · 物理学 2024-08-27 Fabrizio Murgana , David E. Alvarez Castillo , Ana G. Grunfeld , Marco Ruggieri

We study the behavior of strongly interacting matter under a uniform intense external magnetic field in the context of nonlocal extensions of the Polyakov-Nambu-Jona-Lasinio model. A detailed description of the formalism is presented,…

高能物理 - 唯象学 · 物理学 2017-12-22 D. Gomez Dumm , M. F. Izzo Villafañe , S. Noguera , V. P. Pagura , N. N. Scoccola

In this work, we revisit the thermodynamical self-consistency of the quasiparticle model with the finite baryon chemical potential adjusted to lattice QCD calculations. Here, we investigate the possibility that the effective quasiparticle…

高能物理 - 唯象学 · 物理学 2019-07-31 Hong-Hao Ma , Kai Lin , Wei-Liang Qian , Yogiro Hama , Takeshi Kodama

A general research on chiral symmetry restoring phase transitions at zero temperature and finite chemical potentials under electrical neutrality condition has been conducted in a Nambu-Jona-Lasinio model to describe two-flavor normal quark…

高能物理 - 唯象学 · 物理学 2009-03-19 Xiao-Ming Wang , Bang-Rong Zhou

The self-consistent quasiparticle model has been successful in studying QCD thermodynamics. In this model, the medium effects are taken into account by considering quarks and gluons as quasiparticles with temperature-dependent masses which…

核理论 · 物理学 2020-06-19 Sebastian Koothottil , Vishnu M. Bannur

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…

高能物理 - 唯象学 · 物理学 2007-09-17 M. Inui , H. Kohyama , A. Niégawa

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…

高能物理 - 唯象学 · 物理学 2021-06-08 Jens O. Andersen

We investigate two-flavour and two-colour QCD at finite temperature and chemical potential in comparison with a corresponding Nambu and Jona-Lasinio model. By minimizing the thermodynamic potential of the system, we confirm that a second…

高能物理 - 唯象学 · 物理学 2009-11-10 C. Ratti , W. Weise

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

In this work, we extend the two-flavor Nambu--Jona-Lasinio model to one capable of exploring quark and nuclear matter consistently. With an extra term standing for quark-nucleon interactions, nucleons could automatically emerge as…

核理论 · 物理学 2024-12-03 Gaoqing Cao

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…

高能物理 - 唯象学 · 物理学 2025-01-06 Alejandro Ayala , Bruno S. Lopes , Ricardo L. S. Farias , Luis C. Parra

Recently we showed how a non-local Nambu-Jona-Lasinio model comes out from QCD in the low-energy limit. In this way, it is possible to fix all the free parameters of the model with physical ones. We use this approach to derive a local limit…

高能物理 - 唯象学 · 物理学 2013-12-02 Marco Frasca

The phase structure of a simple Nambu-Jona-Lasinio model has been investigated at non-zero values of $\mu$ and H, where H is an external magnetic field and $\mu$ is the chemical potential. On this basis magnetic oscillations effects were…

核理论 · 物理学 2009-10-31 D. Ebert , K. G. Klimenko

It is known that in the 2+1 dimensional quantum electrodynamics with Chern-Simons term, spontaneous magnetic field induces Lorentz symmetry breaking. In this paper, thermodynamical characters, especially the phase structure of this model…

高能物理 - 理论 · 物理学 2009-09-25 Shinya Kanemura , Takao Matsushita

We derive the next-to-leading order correction to the Nambu-Jona-Lasinio model starting from quantum chromodynamics. So, we are able to fix the constants of the Nambu-Jona-Lasinio model from quantum chromodynamics and analyze the behavior…

高能物理 - 唯象学 · 物理学 2017-03-21 Marco Frasca

We revisit the Polyakov Loop coupled Nambu-Jona-Lasinio model that maintains the Polyakov loop dynamics in the limit of zero temperature. This is of interest for astrophysical applications in the interior of neutron stars. For this purpose…

高能物理 - 唯象学 · 物理学 2019-11-27 O. Ivanytskyi , M. Ángeles Pérez-García , V. Sagun , C. Albertus