Lorentz-violation-induced arrival delays of cosmological particles

TL;DR

This paper revises the analysis of Lorentz violation effects on cosmological particles by incorporating the universe's expansion, revealing significant corrections to previous limits on Lorentz violation.

Contribution

It provides a new formulation that accounts for cosmological expansion in analyzing Lorentz-violation-induced delays, improving the accuracy of constraints.

Findings

Corrected limits on Lorentz violation are significantly different from previous estimates.

Inclusion of cosmological expansion is crucial for accurate time-of-flight analyses.

The formulation can be applied to future astrophysical tests of fundamental physics.

Abstract

We point out that previous studies of possible Lorentz-violating effects in astronomical time-of-flight data did not take into account the entire implications of the universe's cosmological expansion. We present the derivation of the accurate formulation of the problem and show that the resulting correction of the limits on Lorentz violation is significant.