Measuring Lorentz Violation in Weak Gravity Fields

TL;DR

This paper investigates how experiments in weak gravity fields can constrain new coefficients for Lorentz violation, advancing tests of fundamental physics in curved spacetime.

Contribution

It introduces a framework to compare various gravity experiments for constraining Lorentz-violating coefficients in curved spacetime.

Findings

First constraints on new Lorentz-violating coefficients from gravity experiments

Comparison of free-fall, interferometer, and bound-state experiments in weak gravity

Identification of experimental sensitivities to Lorentz violation

Abstract

Many new linearized coefficients for Lorentz violation are discovered in our recent work on the construction of a generic Lorentz-violating effective field theory in curved spacetime. The new coefficients can be constrained by experiments in weak gravity fields. In this work, we compare experiments in different gravitational potentials and study three types of gravity-related experiments: free-fall, gravitational interferometer, and gravitational bound-state experiments. First constraints on the new coefficients for Lorentz violation are extracted from those experiments.