Observable effects from extra dimensions

TL;DR

This paper discusses how conformal excitations of compactified extra dimensions in multidimensional theories can produce gravitational excitons, which may contribute to dark matter or influence particle interactions.

Contribution

It introduces the concept of gravitational excitons arising from internal space metric excitations in multidimensional models.

Findings

Gravitational excitons can act as dark matter candidates.

These excitations affect cross sections of standard particles.

Abstract

For any multidimensional theory with compactified internal spaces, conformal excitations of the internal space metric result in gravitational excitons in the external spacetime. These excitations contribute either to dark matter or to cross sections of usual particles.