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We study the two-flavor Nambu--Jona-Lasinio model with the Polyakov loop (PNJL model) in the presence of a strong magnetic field and a chiral chemical potential $\mu_5$ which mimics the effect of imbalanced chirality due to QCD instanton…

High Energy Physics - Phenomenology · Physics 2014-11-20 Kenji Fukushima , Marco Ruggieri , Raoul Gatto

The QCD phase diagram at zero chemical potential and finite temperature subject to an external magnetic field is studied within the three flavor Nambu--Jona-Lasinio (NJL) model and the NJL model with the Polyakov loop (PNJL). A scalar…

High Energy Physics - Phenomenology · Physics 2014-06-25 M. Ferreira , P. Costa , O. Lourenço , T. Frederico , C. Providência

We use a three-flavor Nambu--Jona-Lasinio model to study the thermodynamics of strange quark matter under a strong magnetic field. The model Lagrangian features flavor SU(3) four-quark interactions and six-quark interactions that break the…

High Energy Physics - Phenomenology · Physics 2021-11-11 William R. Tavares , Ricardo L. S. Farias , Sidney S. Avancini , Varese S. Timóteo , Marcus B. Pinto , Gastão Krein

We investigate chemical-potential ($\mu$) and temperature ($T$) dependence of scalar and pseudo-scalar meson masses for both real and imaginary $\mu$, using the Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model with three-flavor…

High Energy Physics - Phenomenology · Physics 2011-01-18 Takeshi Matsumoto , Kouji Kashiwa , Hiroaki Kouno , Kagayaki Oda , Masanobu Yahiro

Recently, it was found in QED that the generation of a dynamical electron mass in a strong magnetic field is significantly enhanced by the perturbative electron mass. In the present paper, the related question of a possible enhancement of…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. G. Klimenko , V. Ch. Zhukovsky

In this article we study the nonlocal Nambu--Jona-Lasinio model with a Gaussian regulator in the chiral limit. Finite temperature effects and the presence of a homogeneous magnetic field are considered. The magnetic evolution of the…

High Energy Physics - Phenomenology · Physics 2015-10-28 M. Loewe , F. Marquez , C. Villavicencio , R. Zamora

We investigate the magnetized QCD matter and chiral phase transition in a (2 {\th} 1)-flavor Nambu-Jona-Lasinio (NJL) model at finite temperature and chemical potential by comparing the contributions from the tensor spin polarization (TSP)…

High Energy Physics - Phenomenology · Physics 2023-04-12 Yi-Wei Qiu , Sheng-Qin Feng

The two-photon two-neutrino interaction induced by magnetic field is investigated. In particular the processes $\gamma \gamma \to \nu \bar \nu$ and $\gamma \to \gamma \nu \bar \nu$ are studied in the presence of strong magnetic field. An…

High Energy Physics - Phenomenology · Physics 2015-06-25 M. V. Chistyakov , N. V. Mikheev

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…

High Energy Physics - Phenomenology · Physics 2025-08-11 F. L. Braghin

Phase transitions in the three-dimensional diluted Ising antiferromagnet in an applied magnetic field are analyzed numerically. It is found that random magnetic field in a system with spin concentration below a certain threshold induces a…

Other Condensed Matter · Physics 2009-11-11 V. V. Prudnikov , V. N. Borodikhin

The occupied Landau levels of strange quark matter are investigated in the framework of the SU(3) NJL model with a conventional coupling and a magnetic-field dependent coupling respectively. At lower density, the Landau levels are mainly…

High Energy Physics - Phenomenology · Physics 2016-07-12 Xin-Jian Wen , Jun-Jun Liang

The QCD phase transitions are investigated in the presence of an external magnetic field in the Polyakov improved Nambu--Jona-Lasinio (PNJL) model. We detailedly analyze that how the filling of multiple Landau levels by light (up and down)…

High Energy Physics - Phenomenology · Physics 2019-07-24 Guo-yun Shao , Wei-bo He , Xue-yan Gao

In this letter, taking the Nambu--Jona--Lasinio model as an example, we propose a new self-consistent mean field approximation method by means of Fierz transformation. This new self-consistent mean field approximation introduces a new free…

Nuclear Theory · Physics 2019-09-04 Fei Wang , Yakun Cao , Yonghui Dia , Hongshi Zong

We study the $T {-} {\mu}$ phase diagram of quark matter under the influence of a strong uniform magnetic field in the framework of a nonlocal extension of the Polyakov Nambu Jona Lasinio model (PNJL). The existence of a critical end point…

High Energy Physics - Phenomenology · Physics 2023-10-10 J. P. Carlomagno , S. A. Ferraris , D. Gómez Dumm , A. G. Grunfeld

In the recently years it has been argued that spectators in heavy ion collisions are responsible for creating a strong magnetic field that could play an important role in the QCD phase transition. In this work we use the SU(2)…

High Energy Physics - Phenomenology · Physics 2013-07-10 Andre Felipe Garcia , Marcus Benghi Pinto

A magnetic field induced electric polarization and the corresponding change of an effective junction capacitance are considered within a 3D model of disordered Josephson junction arrays. At some threshold field (near the Josephson network…

Superconductivity · Physics 2007-05-23 Sergei A. Sergeenkov

We investigate proximity induced superconductivity in micrometer-long bismuth nanowires con- nected to superconducting electrodes with a high critical field. At low temperature we measure a supercurrent that persists in magnetic fields as…

The effect of a magnetic field on a gapped quantum magnet is described within the framework of the Quantum Dimer Model. A minimal model describing the proliferation of itinerant spinons above a critical field is proposed and investigated by…

Strongly Correlated Electrons · Physics 2008-09-16 A. Ralko , F. Becca , D. Poilblanc

The finite-size effect on the chiral phase transition is investigated in the Nambu--Jona-Lasinio model. To take into account finite-size effects, momentum integrals are replaced by momentum summations. The ground state of quark matter at…

High Energy Physics - Phenomenology · Physics 2019-04-03 Kun Xu , Mei Huang

We investigate the possibility of charged pion condensation in the presence of parallel rotation and magnetic field within the Nambu--Jona-Lasinio model with quarks as the fundamental degrees of freedom. Previous study based on…

Nuclear Theory · Physics 2019-11-20 Gaoqing Cao , Lianyi He
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