Short-range forces due to Lorentz-symmetry violation

TL;DR

This paper investigates novel short-range modifications to Newtonian gravity caused by Lorentz-symmetry breaking, deriving non-perturbative force laws that extend beyond Yukawa models and could produce detectable experimental signals.

Contribution

It constructs the first non-perturbative, all-orders force law corrections due to Lorentz-symmetry violation in the Newtonian limit, expanding the theoretical framework of gravity modifications.

Findings

New force law corrections beyond Yukawa parameterization

Potential for large short-range forces depending on symmetry-breaking coefficients

Discussion of experimental detection possibilities for these forces

Abstract

Complementing previous theoretical and experimental work, we explore new types of short-range modifications to Newtonian gravity arising from spacetime-symmetry breaking. The first non-perturbative, i.e., to all orders in coefficients for Lorentz-symmetry breaking, are constructed in the Newtonian limit. We make use of the generic symmetry-breaking terms modifying the gravity sector and examine the isotropic coefficient limit. The results show new kinds of force law corrections, going beyond the standard Yukawa parameterization. Further, there are ranges of the values of the coefficients that could make the resulting forces large compared to the Newtonian prediction at short distances. Experimental signals are discussed for typical test mass arrangements.