Observational Limits on Gauss-Bonnet and Randall-Sundrum Gravities

TL;DR

This paper examines the observational constraints on Gauss-Bonnet and Randall-Sundrum gravity models, finding that current experiments cannot distinguish them from General Relativity, thus requiring more precise methods.

Contribution

It analyzes the effective four-dimensional solutions of these theories in weak-field and black hole evaporation regimes, showing their predictions align with General Relativity.

Findings

Current experiments cannot differentiate these models from General Relativity.

Predictions of these models match those of General Relativity in analyzed regimes.

Higher accuracy observations are necessary for testing these theories.

Abstract

We discuss the possibilities of experimental search for new physics predicted by the Gauss-Bonnet and the Randall-Sundrum theories of gravity. The effective four-dimensional spherically-symmetrical solutions of these theories are analyzed. We consider these solutions in the weak-field limit and in the process of the primordial black holes evaporation. We show that the predictions of discussed models are the same as of General Relativity. So, current experiments are not applicable for such search therefore different methods of observation and higher accuracy are required.