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We investigate the effect of a uniform background magnetic field on the chiral symmetry breaking in SU(2) Yang-Mills theory on the lattice. We observe that the chiral condensate grows linearly with the field strength B up to \sqrt{e B} = 3…

High Energy Physics - Lattice · Physics 2009-12-14 P. V. Buividovich , M. N. Chernodub , E. V. Luschevskaya , M. I. Polikarpov

Using the worldline formalism we compute an effective action for fermions under a temporally modulated electric field and a spatially modulated magnetic field. It is known that the former leads to an enhanced Schwinger Mechanism, while we…

High Energy Physics - Theory · Physics 2017-03-07 Patrick Copinger , Kenji Fukushima

Inspired by recent discussions of inverse magnetic catalysis in the literature, we examine the effects of a uniform external magnetic field on the chiral phase transition in quenched ladder QED at nonzero chemical potential. In particular,…

High Energy Physics - Phenomenology · Physics 2013-08-01 W. -C. Syu , D. -S. Lee , C. N. Leung

We study the nature of the chiral transition for an effective theory with spontaneous breaking of symmetry, where charged bosons and fermions are subject to the effects of a constant external magnetic field. The problem is studied in terms…

High Energy Physics - Phenomenology · Physics 2014-07-02 Alejandro Ayala , Luis Alberto Hernandez , Ana Julia Mizher , Juan Cristobal Rojas , Cristian Villavicencio

We study the effects of helical magnetic fields on chiral symmetry breaking within the AdS/QCD framework using the D3/D7-brane model. By analyzing the brane embeddings, we obtain three types of massless solutions, corresponding to three…

High Energy Physics - Theory · Physics 2025-02-27 Martí Berenguer , Javier Mas , Masataka Matsumoto , Keiju Murata , Alfonso V. Ramallo

We study temperature and finite-size effects on the spontaneous symmetry breaking/restoration for a scalar field model under the influence of an external magnetic field, at finite chemical potential. We use the 2PI formalism and consider…

High Energy Physics - Theory · Physics 2013-11-21 L. M. Abreu , C. A. Linhares , A. P. C. Malbouisson , J. M. C. Malbouisson

We explore chiral symmetry breaking in a magnetic field within a Nambu-Jona-Lasinio model of interacting massless quarks including tensor channels. We show that the new interaction channels open up via Fierz identities due to the explicit…

Nuclear Theory · Physics 2015-06-17 Efrain J. Ferrer , Vivian de la Incera , Israel Portillo , Matthew Quiroz

We study chiral symmetry breaking in QED when a uniform external magnetic field is present. We calculate higher order corrections to the dynamically generated fermion mass and find them to be small. In so doing we correct an error in the…

High Energy Physics - Theory · Physics 2007-05-23 P. Jasinski , C. N. Leung

In pursuit of the sketching the effective magnetized QCD phase diagram, we found conditions on the critical coupling for chiral symmetry breaking in the Nambu-Jona-Lasinio model in a nontrivial thermo-magnetic environment. Critical values…

High Energy Physics - Theory · Physics 2018-08-15 Angelo Martínez , Alfredo Raya

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

We propose a variant of the antiferromagnetic XY model on the triangular lattice to study the interplay between the chiral and nematic orders in addition to the magnetic order. The model has a significant bi-quadratic interaction of the…

Strongly Correlated Electrons · Physics 2009-11-13 Jin-Hong Park , Shigeki Onoda , Naoto Nagaosa , Jung Hoon Han

In this paper we study the properties of media with chiral imbalance parameterized by chiral chemical potential. It is shown that depending on the strength of interaction between constituents in the media the chiral chemical potential…

High Energy Physics - Theory · Physics 2016-05-25 V. V. Braguta , A. Yu. Kotov

Here by combining a symmetry-based analysis with numerical computations we predict a new kind of magnetic ordering - antichiral ferromagnetism. The relationship between chiral and antichiral magnetic order is conceptually similar to the…

Strongly Correlated Electrons · Physics 2021-07-21 Filipp N. Rybakov , Anastasiia Pervishko , Olle Eriksson , Egor Babaev

We calculate the electron self-energy in a magnetized QED plasma to the leading perturbative order in the coupling constant and to the linear order in an external magnetic field. We find that the chiral asymmetry of the normal ground state…

High Energy Physics - Phenomenology · Physics 2013-07-31 E. V. Gorbar , V. A. Miransky , I. A. Shovkovy , Xinyang Wang

Motivated by the phenomenological scenario of the chiral magnetic effect that can be possibly found in high-energy heavy ion collisions, we study the role of very intense magnetic fields and strong CP violation in the phase structure of…

High Energy Physics - Phenomenology · Physics 2010-02-11 Eduardo S. Fraga , Ana Júlia Mizher

We study the impact of steady, homogeneous, and external parallel electric and magnetic field strength ($eE\parallel eB$), on the chiral symmetry breaking-restoration and confinement-deconfinement phase transitions. We also sketch the phase…

High Energy Physics - Phenomenology · Physics 2021-09-01 Aftab Ahmad

We explore the parameter space of the two-flavor thermal quark-meson model and its Polyakov loop-extended version under the influence of a constant external magnetic field $B$. We investigate the behavior of the pseudo critical temperature…

High Energy Physics - Phenomenology · Physics 2015-06-17 E. S. Fraga , B. W. Mintz , J. Schaffner-Bielich

In-medium masses of the pseudoscalar and vector open bottom mesons ($B$, $\bar{B}$, $B_s$ and $B^*$, $\bar{B}^*$, $B_s^*$) are studied in the magnetized nuclear matter by considering the effects of Dirac sea, within the chiral effective…

High Energy Physics - Phenomenology · Physics 2023-09-04 Sourodeep De , Pallabi Parui , Amruta Mishra

Effects of external magnetic field on various properties of the quantum chromodynamics under extreme conditions of temperature and density have been analysed. To this end, we use SU(3) Polyakov linear sigma-model and assume that the…

High Energy Physics - Phenomenology · Physics 2015-01-30 Abdel Nasser Tawfik , Niseem Magdy

We discuss the combined effect of magnetic fields and geometry in interacting fermionic systems. At leading order in the heat-kernel expansion, the infrared singularity (that in flat space leads to the magnetic catalysis) is regulated by…

High Energy Physics - Theory · Physics 2015-05-13 Antonino Flachi , Kenji Fukushima , Vincenzo Vitagliano
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