What do we know about Lorentz invariance?

JD Tasson - Reports on Progress in Physics, 2014 - iopscience.iop.org
The realization that Planck-scale physics can be tested with existing technology through the
search for spacetime-symmetry violation brought about the development of a …

Fermions with Lorentz-violating operators of arbitrary dimension

VA Kostelecký, M Mewes - Physical Review D—Particles, Fields, Gravitation …, 2013 - APS
The theoretical description of fermions in the presence of Lorentz and CPT violation is
developed. We classify all Lorentz-and CPT-violating and invariant terms in the quadratic …

Lorentz-violating spinor electrodynamics and Penning traps

Y Ding, VA Kostelecký - Physical Review D, 2016 - APS
The prospects are explored for testing Lorentz-and CPT-violating quantum electrodynamics
in experiments with Penning traps. We present the Lagrange density of Lorentz-violating …

New -even and Lorentz-violating nonminimal coupling in the Dirac equation

R Casana, MM Ferreira Jr, E Passos… - Physical Review D …, 2013 - APS
In this work, we propose a CPT-even and Lorentz-violating dimension-five nonminimal
coupling between fermionic and gauge fields, involving the CPT-even and Lorentz-violating …

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

RV Maluf, CAS Almeida, R Casana, MM Ferreira Jr - Physical Review D, 2014 - APS
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 …

[HTML][HTML] One-loop radiative corrections in bumblebee-Stueckelberg model

FM Belchior, RV Maluf - Physics Letters B, 2023 - Elsevier
This work aims to study the radiative corrections in a vector model with spontaneous Lorentz
symmetry violation, known in the literature as the bumblebee model. We consider such a …

Causal approach for the electron-positron scattering in generalized quantum electrodynamics

R Bufalo, BM Pimentel, DE Soto - Physical Review D, 2014 - APS
In this paper we study the generalized electrodynamics contribution to the electron-positron
scattering process e-e+→ e-e+, ie, Bhabha scattering. Within the framework of the standard …

[HTML][HTML] On a neutral Dirac particle interacting with a magnetic field in a topological defect space-time and its hidden supersymmetry

S Zare, H Hassanabadi, G Junker - The European Physical Journal Plus, 2023 - Springer
In this paper, we study the relativistic quantum dynamics of a neutral Dirac particle with a
permanent magnetic dipole moment that interacts with an external magnetic field in the …

[HTML][HTML] Radiative generation of the CPT-even gauge term of the SME from a dimension-five nonminimal coupling term

R Casana, MM Ferreira Jr, RV Maluf, FEP Dos Santos - Physics Letters B, 2013 - Elsevier
In this Letter we show for the first time that the usual CPT-even gauge term of the Standard
Model Extension (SME), in its full structure, can be radiatively generated, in a gauge …

Matter-gravity scattering in the presence of spontaneous Lorentz violation

RV Maluf, V Santos, WT Cruz, CAS Almeida - Physical Review D—Particles …, 2013 - APS
Considering quantum gravity within the framework of effective field theory, we investigated
the consequences of spontaneous Lorentz violation for the gravitational potential. In …