190 citations · 2.1k across the 85 of their papers we have counts for
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Bounds on Spin-Dependent Lorentz Violation From Inverse Compton Observations
Brett Altschul
Some of the best bounds on possible Lorentz violation in the electron sector come from observations of high-energy astrophysical phenomena. Using measurements of TeV inverse Compto…
Astrophysical Limits on Lorentz Violation for All Charged Species
Brett Altschul
If Lorentz violation exists, it will affect the thresholds for pair creation processes. Lorentz-violating operators that change the maximum velocities of charged particles may incr…
Vacuum Cerenkov Radiation in Lorentz-Violating Theories Without CPT Violation
Brett Altschul
In theories with broken Lorentz symmetry, Cerenkov radiation may be possible even in vacuum. We analyze the Cerenkov emissions that are associated with the least constrained Lorent…
Synchrotron and Inverse Compton Constraints on Lorentz Violations for Electrons
Brett Altschul
We present a method for constraining Lorentz violation in the electron sector, based on observations of the photons emitted by high-energy astrophysical sources. The most important…
Limits on Neutron Lorentz Violation from Pulsar Timing
B. Altschul
Pulsars are the most accurate naturally occurring clocks, and data about them can be used to set bounds on neutron-sector Lorentz violations. If SO(3) rotation symmetry is complete…
Lorentz Violation and the Yukawa Potential
B. Altschul
We analyze Lorentz violations in the bosonic sector of a Yukawa-type quantum field theory. The nonrelativistic potential may be determined to all orders in the Lorentz violation, a…
Limits on Lorentz Violation from Synchrotron and Inverse Compton Sources
B. Altschul
We derive new bounds on Lorentz violations in the electron sector from existing data on high-energy astrophysical sources. Synchrotron and inverse Compton data give precisely compl…
Eliminating the CPT-Odd f Coefficient from the Lorentz-Violating Standard Model Extension
B. Altschul
The fermionic f coefficient in the Lorentz-violating standard model extension presents a puzzle. Thus far, no observable quantity that depends upon f has ever been found. We show t…