Impact of Lorentz violation models on exoplanets dynamics

TL;DR

This paper explores how Lorentz violation models, specifically the Standard Model Extension, could influence exoplanet dynamics and how improved detection methods might help test these theories.

Contribution

It introduces the impact of Lorentz violation models on exoplanet radial velocity perturbations and proposes using exoplanet observations to constrain these models.

Findings

Lorentz violations can affect exoplanet radial velocity signals

Exoplanet systems can serve as tests for alternative gravity theories

Improved detection techniques may tighten constraints on Lorentz violation parameters

Abstract

Many exoplanets were detected thanks to the radial velocity method, according to which the motion of a binary system around its center of mass can produce a periodical variation of the Doppler effect of the light emitted by the host star. These variations are influenced by both Newtonian and non-Newtonian perturbations to the dominant inverse-square acceleration; accordingly, exoplanetary systems lend themselves to test theories of gravity alternative to General Relativity. In this paper, we consider the impact of Standard Model Extension (a model that can be used to test all possible Lorentz violations) on the perturbation of radial velocity, and suggest that suitable exoplanets configurations and improvements in detection techniques may contribute to obtain new constraints on the model parameters.