529 citations · 3k across the 59 of their papers we have counts for
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Quantum gravity and spacetime symmetries
Ralf Lehnert
Small violations of spacetime symmetries have recently been identified as promising Planck-scale signals. This talk reviews how such violations can arise in various approaches to q…
CPT- and Lorentz-symmetry breaking: a review
Ralf Lehnert
The breakdown of spacetime symmetries has recently been identified as a promising candidate signal for underlying physics, possibly arising through quantum-gravitational effects. T…
Spacetime symmetries of the Lorentz-violating Maxwell-Chern-Simons model
A. J. Hariton, Ralf Lehnert
The spacetime symmetries of classical electrodynamics supplemented with a Chern-Simons term that contains a constant nondynamical 4-vector are investigated. In addition to translat…
Non-local on-shell field redefinition for the SME
Ralf Lehnert
This work instigates a study of non-local field mappings within the Lorentz- and CPT-violating Standard-Model Extension (SME). An example of such a mapping is constructed explicitl…
Aspects of spacetime-symmetry violations
Ralf Lehnert
The violation of spacetime symmetries provides a promising candidate signal for underlying physics, possibly arising at the Planck scale. This talk gives an overview over various a…
Lorentz and CPT tests involving antiprotons
Ralf Lehnert
Lorentz and CPT tests involving matter-antimatter comparisons at low temperatures are discussed. SME predictions for transition frequencies in such systems include both matter-anti…