Indirect signals from braneworlds

TL;DR

This paper explores the concept of our universe as a brane within higher-dimensional space, focusing on branons as potential dark matter particles that could provide observable evidence for braneworld models.

Contribution

It introduces the idea that branons, arising from brane fluctuations, are viable dark matter candidates and discusses their potential to produce detectable signals.

Findings

Branons are identified as natural WIMP dark matter candidates.

Spontaneous branon annihilations could lead to observable signals.

The scenario offers a new avenue for testing higher-dimensional theories.

Abstract

It has been suggested that our universe could be a 3-dimensional brane where the SM fields live embedded in a D-dimensional space-time. In flexible raneworlds, in addition to the SM fields, new degrees of freedom appear on the brane associated to brane fluctuations. These new fields, known as branons, are standard WIMPs (Weakly Interacting Massive Particles) and therefore natural dark matter candidates, whose spontaneous annihilations can provide first evidences for this scenario.