Failure of Gauge Invariance in the Nonperturbative Formulation of Massless Lorentz-Violating QED

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dc.creatorAltschul, B.
dc.date2003-11-21
dc.date2004-02-11
dc.date.accessioned2026-07-07T04:16:13Z
dc.date.available2026-07-07T04:16:13Z
dc.descriptionWe consider a Lorentz-violating modification to the fermionic Lagrangian of QED that is known to produce a finite Chern-Simons term at leading order. We compute the second order correction to the one-loop photon self-energy in the massless case using an exact propagator and a nonperturbative formulation of the theory. This nonperturbative theory assigns a definite value to the coefficient of the induced Chern-Simons term; however, we find that the theory fails to preserve gauge invariance at higher orders. We conclude that the specific nonperturbative value of the Chern-Simons coefficient has no special significance.
dc.description8 pages, very minor changes
dc.identifierhttps://arxiv.org/abs/hep-th/0311200
dc.identifierhttp://arxiv.org/abs/hep-th/0311200
dc.identifierPhys.Rev. D69 (2004) 125009
dc.identifierdoi:10.1103/PhysRevD.69.125009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/52264
dc.subjectHigh Energy Physics - Theory
dc.titleFailure of Gauge Invariance in the Nonperturbative Formulation of Massless Lorentz-Violating QED
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