Graviton emission from a Gauss-Bonnet brane

TL;DR

This paper investigates how graviton emission from a brane in a five-dimensional Anti de Sitter space is affected by the Gauss-Bonnet term, showing that it reduces emission and eases nucleosynthesis constraints.

Contribution

It introduces the impact of the Gauss-Bonnet term on graviton emission from branes, providing new insights into higher-dimensional cosmological models.

Findings

Graviton emission depends on curvature scale and Gauss-Bonnet coupling.

Including Gauss-Bonnet term decreases graviton emission.

Eases constraints from nucleosynthesis.

Abstract

We study the emission of gravitons by a homogeneous brane with the Gauss-Bonnet term into an Anti de Sitter five dimensional bulk spacetime. It is found that the graviton emission depends on the curvature scale and the Gauss-Bonnnet coupling and that the amount of emission generally decreases. Therefore nucleosynthesis constraints are easier to satisfy by including the Gauss-Bonnet term.