Prospects for Large Relativity Violations in Matter-Gravity Couplings

TL;DR

This paper explores potential large deviations from relativity in matter-gravity interactions, proposing that specialized experiments could detect effects not constrained by current tests, with a specific constraint derived on certain effects.

Contribution

It introduces a class of possible relativity violations in matter-gravity couplings that are unmeasured and could be tested with highly sensitive laboratory experiments.

Findings

A constraint of 1 x 10^{-11} GeV on one combination of effects

Estimates for sensitivities in existing experiments

Potential for future experiments to detect large violations

Abstract

Deviations from relativity are tightly constrained by numerous experiments. A class of unmeasured and potentially large violations is presented that can be tested in the laboratory only via weak gravity couplings. Specialized highly sensitive experiments could achieve measurements of the corresponding effects. A single constraint of 1 x 10^{-11} GeV is extracted on one combination of the 12 possible effects in ordinary matter. Estimates are provided for attainable sensitivities in existing and future experiments.