Gauge invariance and the CPT and Lorentz violating induced Chern-Simons-like term in extended QED

Simple item page
dc.creatorScarpelli, A. P. Baeta
dc.creatorSampaio, Marcos
dc.creatorNemes, M. C.
dc.creatorHiller, B.
dc.date2008-04-22
dc.date2008-09-29
dc.date.accessioned2026-07-07T11:50:07Z
dc.date.available2026-07-07T11:50:07Z
dc.descriptionThe radiative induction of the CPT and Lorentz violating Chern-Simons (CS) term is reassessed. The massless and massive models are studied. Special attention is given to the preservation of gauge symmetry at higher orders in the background vector $b_μ$ when radiative corrections are considered. Both the study of the odd and even parity sectors of the complete vacuum polarization tensor at one-loop order and a non-perturbative analysis show that this symmetry must be preserved by the quantum corrections. As a complement we obtain that transversality of the polarization tensor does not fix the value of the coefficient of the induced CS term.
dc.description10 pages, no figures
dc.identifierhttps://arxiv.org/abs/0804.3537
dc.identifierhttp://arxiv.org/abs/0804.3537
dc.identifierEur.Phys.J.C56:571-578,2008
dc.identifierdoi:10.1140/epjc/s10052-008-0677-4
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203461
dc.subjectHigh Energy Physics - Theory
dc.titleGauge invariance and the CPT and Lorentz violating induced Chern-Simons-like term in extended QED
dc.typetext

Files

Collections

arXiv