When waves meet rays: Seismic vibrations and cosmic showers to test gravity

TL;DR

This paper introduces a new laboratory method combining seismic and cosmic-ray data to test gravity, reducing uncertainties and potentially matching current experimental constraints.

Contribution

It presents a novel approach integrating seismic and muon measurements to detect quantum-gravity effects with improved precision.

Findings

Derived quantum-gravity corrections to the Debye model.

Removed density dependence using muon tomography.

Can constrain gravity parameters comparably to existing experiments.

Abstract

We propose a novel laboratory test of gravity combining seismic-wave measurements with cosmic-ray muon detections. Quantum-gravity corrections to the anharmonic Debye model are derived, yielding a modified bulk modulus that encodes deviations from standard gravity. The usual dependence on density, a dominant source of uncertainty, is removed via muon tomography and seismic velocities measurement. We show that this setup can constrain gravity parameters at a level comparable to current laboratory experiments. Prospects for further improvements are briefly discussed.