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We consider the noncommutative deformation of the Sakai--Sugimoto model at finite temperature and finite baryon chemical potential. The space noncommutativity is possible to have an influence on the flavor dynamics of the QCD. The critical…

High Energy Physics - Theory · Physics 2015-05-20 Tadahito Nakajima , Yukiko Ohtake , Kenji Suzuki

We present a model to study effects from an external magnetic field, chemical potential, and finite size, on the phase structure of a massive four- and six-fermion interacting system. These effects are introduced by a method of…

Other Condensed Matter · Physics 2018-04-04 Emerson B. S. Corrêa , César A. Linhares , Adolfo P. C. Malbouisson

We investigate the effect of a constant external non-Abelian field on chiral symmetry breaking in a (2+1)-dimensional Nambu-Jona-Lasinio model and in 3D QCD by solving the gap equation and the Bethe-Salpeter equation, and also by RG…

High Energy Physics - Theory · Physics 2009-10-30 V. P. Gusynin , D. K. Hong , I. A. Shovkovy

A scalar model is built, as a quantum field theory defined on toroidal topologies, to describe phase transition in films subjected to periodic boundary conditions and influenced by an external and constant magnetic field. Criticality is…

Statistical Mechanics · Physics 2017-12-12 Erich Cavalcanti , Erick Castro , Cesar A. Linhares , Adolfo P. C. Malbouisson

In this paper, the deconfinement and chiral restoration transitions in strong magnetic field is realized at zero temperature in the Polyakov Nambu$-$Jona-Lasinio model. We provide the thermodynamic treatment to mimic the deconfinement phase…

High Energy Physics - Phenomenology · Physics 2022-04-14 Yuan Wang , Xin-Jian Wen

We study the phase behavior of diblock copolymers in presence of an external electric field. We employ self-consistent field theory and treat the relevant Maxwell equation as an additional self-consistent equation. Because we do not treat…

Soft Condensed Matter · Physics 2008-06-23 Chin-Yet Lin , Michael Schick , David Andelman

We study the phase diagram of the Nambu-Jona-Lasinio model in the external magnetic field within the mean-field approximation, taking into account the inhomogeneous chiral condensate. It is shown that there appears a new type of the chiral…

Nuclear Theory · Physics 2015-08-19 Kazuya Nishiyama , Shintaro Karasawa , Toshitaka Tatsumi

We study vacuum dynamics of SU(3) lattice gauge theory at finite temperature. Using the lattice Schr\"odinger functional, SU(3) vacuum is probed by means of an external constant Abelian chromomagnetic field. Our preliminary numerical data…

High Energy Physics - Lattice · Physics 2007-05-23 Paolo Cea , Leonardo Cosmai

We study the chiral symmetry breaking and restoration in $ (2+1) $-dimensional gauge theories from the holographic hard and softwall models. We describe the behavior of the chiral condensate in the presence of an external magnetic field for…

High Energy Physics - Theory · Physics 2018-11-13 Diego M. Rodrigues , Danning Li , Eduardo Folco Capossoli , Henrique Boschi-Filho

In this paper we develop a new method that is different from Schwinger proper time method to deduce the fermion propagator with a constant external magnetic field. In the NJL model, we use this method to find out the gap equation at zero…

High Energy Physics - Phenomenology · Physics 2015-03-03 Song Shi , You-Chang Yang , Yong-Hui Xia , Zhu-Fang Cui , Xiao-Jun Liu , Hong-Shi Zong

We study the effects of an in-plane Dzyaloshinskii-Moriya interaction under an external magnetic field in the highly frustrated kagome antiferromagnet. We focus on the low-temperature phase diagram, which we obtain through extensive…

Strongly Correlated Electrons · Physics 2019-12-11 M. E. Villalba , F. A. Gómez Albarracín , H. D. Rosales , D. C. Cabra

Using a ten dimensional dual string background, we study aspects of the physics of finite temperature large N four dimensional SU(N) gauge theory, focusing on the dynamics of fundamental quarks in the presence of a background magnetic…

High Energy Physics - Theory · Physics 2009-06-11 Tameem Albash , Veselin Filev , Clifford V. Johnson , Arnab Kundu

We perform the renormalization group analysis on the dynamical symmetry breaking under strong external magnetic field, studied recently by Gusynin, Miransky and Shovkovy. We find that any attractive four-Fermi interaction becomes strong in…

High Energy Physics - Theory · Physics 2008-11-26 D. K. Hong , Y. Kim , S. -J. Sin

In this paper, we study the influence of an external magnetic field in holographic QCD models where the backreaction is modeled in via an appropriate choice of the background metric. We add a phenomenological soft wall dilaton to…

High Energy Physics - Theory · Physics 2016-06-08 D. Dudal , D. R. Granado , T. G. Mertens

In this work, we explore the competition between magnetic catalysis effect and chiral rotation effect in a general parallel electromagnetic field within the effective Nambu--Jona-Lasinio model. For a given electric field $E$ at zero…

Nuclear Theory · Physics 2018-02-21 Lingxiao Wang , Gaoqing Cao

We study how an external magnetic field modifies the chiral phase structure of QCD, in particular the phases characterized by inhomogeneous chiral condensates. The magnetic field can be systematically incorporated into a generalized…

High Energy Physics - Phenomenology · Physics 2018-09-14 Hiroaki Abuki

In this work, I'm going to explore the pattern of chiral symmetry breaking and restoration in a solvable magnetic distribution within Nambu--Jona-Lasinio model. The special semi-localized static magnetic field can roughly simulate the…

Nuclear Theory · Physics 2018-03-28 Gaoqing Cao

We study the modifications to the real part of the thermal self-energy for chiral fermions in the presence of a constant external hypermagnetic field. We compute the dispersion relation for fermions occupying a given Landau level to first…

High Energy Physics - Phenomenology · Physics 2009-11-10 Alejandro Ayala , Adnan Bashir , Sarira Sahu

The quantum dynamics of the symmetry broken \lambda (\Phi^2)^2 scalar field theory in the presence of an homogeneous external field is investigated in the large N limit. We consider an initial thermal state of temperature T for a constant…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. J. Cao

In this article we study a nonlocal Nambu--Jona-Lasinio (nNJL) model with a Gaussian regulator in presence of a uniform magnetic field. We take a mixed approach to the incorporation of temperature in the model, and consider aspects of both…

High Energy Physics - Phenomenology · Physics 2017-03-08 F. Márquez , R. Zamora