190 citations · 2.1k across the 85 of their papers we have counts for
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Lorentz violation with an antisymmetric tensor
Brett Altschul, Quentin G. Bailey, Alan Kostelecky
Field theories with spontaneous Lorentz violation involving an antisymmetric 2-tensor are studied. A general action including nonminimal gravitational couplings is constructed, and…
Testing Electron Boost Invariance with 2S-1S Hydrogen Spectroscopy
Brett Altschul
There are few good direct laboratory tests of boost invariance for electrons, because the experiments required often involve repeated precision measurements performed at different…
Radiatively Induced Lorentz and Gauge Symmetry Violation in Electrodynamics with Varying alpha
Alejandro Ferrero, Brett Altschul
A time-varying fine structure constant alpha(t) could give rise to Lorentz- and CPT-violating changes to the vacuum polarization, which would affect photon propagation. Such change…
Bounding Isotropic Lorentz Violation Using Synchrotron Losses at LEP
Brett Altschul
Some deviations from special relativity--especially isotropic effects--are most efficiently constrained using particles with velocities very close to 1. While there are extremely t…
Disentangling Forms of Lorentz Violation With Complementary Clock Comparison Experiments
Brett Altschul
Atomic clock comparisons provide some of the most precise tests of Lorentz and CPT symmetries in the laboratory. With data from multiple such experiments using different nuclei, it…