Dynamical Lorentz and CPT symmetry breaking in a 4D four-fermion model

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dc.creatorGomes, M.
dc.creatorMariz, T.
dc.creatorNascimento, J. R.
dc.creatorda Silva, A. J.
dc.date2007-09-18
dc.date2008-03-27
dc.date.accessioned2026-07-07T11:37:18Z
dc.date.available2026-07-07T11:37:18Z
dc.descriptionIn a 4D chiral Thirring model we analyse the possibility that radiative corrections may produce spontaneous breaking of Lorentz and CPT symmetry. By studying the effective potential, we verified that the chiral current $\barψγ^μ γ_5 ψ$ may assume a nonzero vacuum expectation value which triggers the Lorentz and CPT violations. Furthermore, by making fluctuations on the minimum of the potential we dynamically induce a bumblebee like model containing a Chern-Simons term.
dc.descriptionSmall modifications in the text and new references added, 12 pages, 4 figures, revtex4. To appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0709.2904
dc.identifierhttp://arxiv.org/abs/0709.2904
dc.identifierPhys.Rev.D77:105002,2008
dc.identifierdoi:10.1103/PhysRevD.77.105002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199160
dc.subjectHigh Energy Physics - Theory
dc.titleDynamical Lorentz and CPT symmetry breaking in a 4D four-fermion model
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