An odd (parity) test of Lorentz symmetry with atomic dysprosium

TL;DR

This paper proposes a tabletop experiment using Stark interference in atomic dysprosium to directly measure odd-parity components of the Lorentz-violating tensor, aiming for high sensitivity to potential violations.

Contribution

It introduces a novel Stark interference method to directly probe odd-parity Lorentz-violating coefficients in atomic dysprosium, enhancing sensitivity to fundamental symmetry violations.

Findings

Potential sensitivity to c_{0j} coefficients as small as 10^{-18}

Demonstrates a feasible tabletop approach for testing Lorentz invariance

Provides a new experimental avenue for parity violation detection

Abstract

We propose using a Stark interference technique to directly measure the odd-parity c_{0j} components of the electron sector c_{\mu\nu} tensor of the Standard-Model Extension. This technique has been shown to be a sensitive probe of parity violation in atomic dysprosium in a low-energy, tabletop experiment, and may also be straightforwardly applied to test Lorentz invariance. We estimate that such an experiment may be sensitive to c_{0j} coefficients as small as 10^{-18}.