43 citations · 90 across the 7 of their papers we have counts for
10 papers · 1 filter
CPT and Lorentz violation as signatures for Planck-scale physics
Ralf Lehnert
In recent years, the breakdown of spacetime symmetries has been identified as a promising research field in the context of Planck-scale phenomenology. For example, various theoreti…
Limits on isotropic Lorentz violation in QED from collider physics
Michael A. Hohensee, Ralf Lehnert, David F. Phillips +1
We consider the possibility that Lorentz violation can generate differences between the limiting velocities of light and charged matter. Such effects would lead to efficient vacuum…
Neutrino flavor ratios as diagnostic of solar WIMP annihilation
Ralf Lehnert, Thomas J. Weiler
We consider the neutrino (and antineutrino) flavors arriving at Earth for neutrinos produced in the annihilation of weakly interacting massive particles (WIMPs) in the Sun's core.…
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…
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…
Vacuum Cherenkov radiation
Ralf Lehnert, Robertus Potting
Within the classical Maxwell-Chern-Simons limit of the Standard-Model Extension (SME), the emission of light by uniformly moving charges is studied confirming the possibility of a…