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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of a Chern-Simons term in the dynamical fermion masses in reduced or pseudo QED

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Casimiro Olivares, Juan Angel [1] ; Albino, Luis [2] ; Mizher, Ana Julia [2, 3] ; Raya, Alfredo [1, 3]
Total Authors: 4
[1] Univ Michoacana de San Nicolas Hidalgo, Inst Fis & Matemat, Edificio C-3, Ciudad Univ Francisco J Mijica S-N, Morelia 58040, Michoacan - Mexico
[2] Univ Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, Bloco 2, BR-01140070 Sao Paulo, SP - Brazil
[3] Univ Bio Bio, Ctr Ciencias Exactas, Avda Andres Bello 720, Casilla 447, Chillan - Chile
Total Affiliations: 3
Document type: Journal article
Source: Physical Review D; v. 102, n. 9 NOV 24 2020.
Web of Science Citations: 0

Mixed-dimensional theories have been used to describe condensed matter systems where fermions are constrained to a plane while the gauge fields they interact with remain four dimensional. Here we investigate dynamical breaking of chiral symmetry in the framework of a mixed-dimensional theory that has been successful in describing graphene and other planar Dirac materials and has been dubbed pseudo or reduced quantum electrodynamics. We explore the interplay between the gauge and fermion sectors when a Chern-Simons term is considered and, by exploring the tensor structure of the fermion self-energy, we show that the radiative corrections may induce both a Dirac and a Haldane mass term. Furthermore, by solving the corresponding Schwinger-Dyson equation in a suitable truncation, we nonperturbatively explore the dynamical generation of fermion masses for different values of the electromagnetic coupling and the Chern-Simons coefficient. We also show that for definite parameter values, the contributions from each chirality cancel out and the chiral symmetry may be restored. Possible implications of this result for physical systems, in particular on what concerns the chiral magnetic effect, are discussed. (AU)

FAPESP's process: 18/17643-5 - Light-quark meson description with Schwinger-Dyson equations of quantum chromodynamics
Grantee:Luis Albino Fernandez Rangel
Support Opportunities: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 16/12705-7 - Magnetic fields in heavy ion collisions: effects on obserbables
Grantee:Ana Júlia Silveira Mizher
Support Opportunities: Scholarships in Brazil - Post-Doctorate