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Related papers: A Chiral Magnetic Effect from AdS/CFT with Flavor

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We give a detailed account and extensions of a holographic flavor superconductivity model which we have proposed recently. The model has an explicit field theory realization as strongly coupled N=2 Super Yang-Mills theory with fundamental…

High Energy Physics - Theory · Physics 2009-11-05 Martin Ammon , Johanna Erdmenger , Matthias Kaminski , Patrick Kerner

The Axial Magnetic Effect is the generation of an equilibrium dissipationless energy flow of chiral fermions in the direction of the axial (chiral) magnetic field. At finite temperature the dissipationless energy transfer may be realized in…

High Energy Physics - Lattice · Physics 2014-04-23 V. Braguta , M. N. Chernodub , V. A. Goy , K. Landsteiner , A. V. Molochkov , M. I. Polikarpov

We consider the STU model as a gravity dual of a strongly-coupled plasma with multiple anomalous U(1) currents. In the bulk we add additional background gauge fields to include the effects of external electric and magnetic fields on the…

High Energy Physics - Theory · Physics 2011-07-21 Tigran Kalaydzhyan , Ingo Kirsch

We investigate QCD with a large number of massless flavors with the aid of renormalization group flow equations. We determine the critical number of flavors separating the phases with and without chiral symmetry breaking in SU(Nc) gauge…

High Energy Physics - Phenomenology · Physics 2009-01-07 Holger Gies , Joerg Jaeckel

We study the static electric current due to the Chiral Magnetic Effect in samples of Weyl semimetals with slab geometry, where the magnetic field is parallel to the boundaries of the slab. We use the Wilson-Dirac Hamiltonian as a simplest…

Strongly Correlated Electrons · Physics 2016-06-28 S. N. Valgushev , M. Puhr , P. V. Buividovich

The chiral symmetry breaking in the presence of an external magnetic field is studied in the framework of logarithmic quark-sigma model with three flavors (u,d,s). The effective logarithmic mesonic potential is extended to strange quark and…

High Energy Physics - Phenomenology · Physics 2017-08-18 M. Abu-Shady

We investigate the Gross-Neveu model in $2+1$ dimensions in a constant and homogeneous magnetic field using one reducible flavor of overlap fermions. Our lattice simulations suggest that the magnetic catalysis phenomenon, i.e., an increase…

High Energy Physics - Lattice · Physics 2022-11-21 Michael Mandl , Julian J. Lenz , Andreas Wipf

In the presence of parallel electric and magnetic fields, the violation of separate number conservation laws for the three dimensional left and right handed Weyl fermions is known as the chiral anomaly. The recent discovery of Weyl and…

Mesoscale and Nanoscale Physics · Physics 2024-02-20 Gargee Sharma , Pallab Goswami , Sumanta Tewari

We study constraints on thermal phase transitions of ${\rm SU}(N_c)$ gauge theories by using the 't Hooft anomaly involving the center symmetry and chiral symmetry. We consider two cases of massless fermions: (i) adjoint fermions, and (ii)…

High Energy Physics - Theory · Physics 2018-05-25 Hiroyuki Shimizu , Kazuya Yonekura

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 discuss three possible ways to address quantum physics behind chiral magnetic effect and electric charge fluctuation patterns in heavy ion collisions. The first one makes use of P-parity violation probed by local order parameters, the…

High Energy Physics - Phenomenology · Physics 2010-12-23 V. Orlovsky , V. Shevchenko

We study Chern-Simons (CS) superconductivity in the presence of uniform external magnetic field of {\it arbitrary strength} for a system of fermions in two spatial dimensions, which are minimally coupled both to the CS and Maxwell gauge…

Condensed Matter · Physics 2009-10-22 Sudhansu S. Mandal , S. Ramaswamy , V. Ravishankar

We determine the antisymmetric current-current response for a pair of (type I) tilted Weyl cones with opposite chirality. We find that the dynamical chiral magnetic effect depends on the magnitude of the tilt and on the angle between the…

Mesoscale and Nanoscale Physics · Physics 2017-10-04 E. C. I. van der Wurff , H. T. C. Stoof

In order to clarify the connection between {\it current} and {\it constituent} quarks (of u,d,s flavors), several authors have used the lightlike chiral $SU(3)\otimes SU(3)$ algebra as a central concept. This literature is reviewed here…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Mustaki

Recently, the existence of massless chiral (Weyl) fermions has been postulated in a class of semi-metals with a non-trivial energy dispersion.These materials are now commonly dubbed Weyl semi-metals (WSM).One predicted property of Weyl…

Materials Science · Physics 2016-08-12 R. D. dos Reis , M. O. Ajeesh , N. Kumar , F. Arnold , C. Shekhar , M. Naumann , M. Schmidt , M. Nicklas , E. Hassinger

Within a Supersymmetric Quantum Mechanics (SUSY-QM) framework, the (3+1) Dirac equation describing a Dirac material in the presence of external parallel electric and magnetic fields is solved. Considering static but non-uniform electric and…

High Energy Physics - Theory · Physics 2023-06-29 Julio Cesar Pérez-Pedraza , Juan D. García-Muñoz , A. Raya

The chiral magnetic and the chiral vortical effects are recently discovered phenomena arising from chiral gauge and gravitational anomalies that lead to generation of electric currents in presence of magnetic field or vorticity. The…

High Energy Physics - Theory · Physics 2015-06-22 Umut Gursoy , Aron Jansen

We use Monte Carlo simulation to probe the phase structure of a SU(2) gauge theory containing $N_f$ Dirac fermion flavors transforming in the fundamental representation of the group and interacting through an additional four fermion term.…

High Energy Physics - Lattice · Physics 2013-05-30 Simon Catterall , Richard Galvez , Jay Hubisz , Dhagash Mehta , Aarti Veernala

We perform a lattice study, in the quenched approximation, of dynamical mass generation in a system of relativistic (Dirac) fermions, coupled to an Abelian gauge field in (2+1)-dimensions, in the presence of an external (constant) magnetic…

High Energy Physics - Lattice · Physics 2009-10-31 K. Farakos , G. Koutsoumbas , N. E. Mavromatos

The stringent experimental bound on $\mu \rightarrow e \gamma$ is compatible with a simultaneous and sizable new physics contribution to the electron and muon anomalous magnetic moments $(g-2)_\ell$ ($\ell=e,\,\mu$), only if we assume a…

High Energy Physics - Phenomenology · Physics 2020-06-18 Lorenzo Calibbi , M. L. López-Ibáñez , Aurora Melis , Oscar Vives