Lorentz violation bounds on Bhabha scattering

Charneski, B.; Gomes, M.; Maluf, R. V.; Silva, A. J. da

doi:10.1103/physrevd.86.045003

Cited by 58 publications

(74 citation statements)

References 36 publications

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“…Several aspects of Lorentz-violating QED have been studied through the last decade (see f.e. [3-13]), imposing bounds over Lorentz-violating parameters present in the SME Lagrangian [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Lorentz-violating quantum electrodynamics in two-dimensional aether-superspace

Lehum

2015

EPL

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The two-dimensional aether-superspace is constructed and the superfield techniques are applied to the study of dynamical generation of mass in the Lorentz-violating supersymmetric quantum electrodynamics in two dimensions of spacetime. It is shown that such model presents a dynamical generation of mass to the gauge aether-superfield and its dispersion relation has the structure similar of the CPT-even Lorentz-breaking models. * andrelehum@ect.ufrn.br

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Section: Introductionmentioning

confidence: 99%

Lorentz-violating quantum electrodynamics in two-dimensional aether-superspace

Lehum

2015

EPL

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“…This theoretical framework has inspired a large number of investigations in the last several years, encompassing fermion systems [12][13][14][15][16][17][18][19][20], CPT-probing experiments [21][22][23][24][25][26][27], the electromagnetic CPT-and Lorentzodd term [28]- [41], the CPT-even and Lorentz-odd gauge sector and its interactions with fermions [42][43][44][45][46][47][48][49][50][51], [52][53][54][55][56][57]. Recent investigations involving higher dimensional operators [58][59][60], its possible connections with LV theories [61][62][63][64][65][66], and nonminimal couplings [67][68][69][70]…”

Section: Introductionmentioning

confidence: 99%

Einstein-Hilbert graviton modes modified by the Lorentz-violating bumblebee field

et al. 2014

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In this work, we investigate the consequences of the spontaneous breaking of Lorentz symmetry, triggered by the bumblebee vector field, on the usual Einstein-Hilbert theory. Specifically, we consider the Einstein-Hilbert action modified by the bumblebee dynamic field, and evaluate the graviton propagator using an extended basis of Barnes-Rivers tensor projectors, involving the Lorentz-violating vector. Once the propagator is carried out, we proceed with discussing the consistency of the model, writing the dispersion relations, and analyzing causality and unitarity.We verify that this model possesses two dispersion relations: one provides causal and unitary propagating modes, while the second yields a causal but nonunitary mode which spoils the physical consistency of the model.

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“…Here, the four-vector V µ is a fixed background which breaks both the CPT and Lorentz symmetry. The implications of this nonminimal coupling on fermionic fields have been intensively examined in several aspects, including the fermion-fermion ultrarelativistic scattering [37], generation of radiative corrections [38], the induction of several types of topological and geometrical phases [39], and the dynamics of the Aharonov-Casher-Bohm problem [40]. Recently, it was proposed another CPT-odd and Lorentzviolating nonminimal covariant derivative [32,33],…”

Section: A Cpt-odd and Lorentz-violating Nonminimal Maxwell-higgsmentioning

confidence: 99%

Topological self-dual configurations in a Maxwell–Higgs model with a CPT-odd and Lorentz-violating nonminimal coupling

2016

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We have studied the existence of topological self-dual configurations in a nonminimal CPT-odd and Lorentzviolating (LV) Maxwell-Higgs model, where the LV interaction is introduced by modifying the minimal covariant derivative. The Bogomol'nyi-Prasad-Sommerfield formalism has been implemented, revealing that the scalar self-interaction implying self-dual equations contains a derivative coupling. The CPT-odd self-dual equations describe electrically neutral configurations with finite total energy proportional to the total magnetic flux, which differ from the charged solutions of other CPT-odd and LV models previously studied. In particular, we have investigated the axially symmetrical self-dual vortex solutions altered by the LV parameter. For large distances, the profiles possess general behavior similar to the vortices of Abrikosov-Nielsen-Olesen. However, within the vortex core, the profiles of the magnetic field and energy can differ substantially from ones of the Maxwell-Higgs model depending if the LV parameter is negative or positive.

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Lorentz violation bounds on Bhabha scattering

Cited by 58 publications

References 36 publications

Lorentz-violating quantum electrodynamics in two-dimensional aether-superspace

Lorentz-violating quantum electrodynamics in two-dimensional aether-superspace

Einstein-Hilbert graviton modes modified by the Lorentz-violating bumblebee field

Topological self-dual configurations in a Maxwell–Higgs model with a CPT-odd and Lorentz-violating nonminimal coupling

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