Testing Dark Energy and Light Particles via Black Hole Evaporation at Colliders

TL;DR

This paper proposes using black hole radiation spectra at colliders to test and potentially exclude light scalar fields and modified gravity models as dark energy candidates, providing a new experimental approach.

Contribution

It introduces a method to analyze black hole emissions to constrain light particles and dark energy models, including calculations of grey body factors and emissivity.

Findings

Black hole spectra can distinguish light scalar fields.

Next-generation colliders could measure these effects.

Potential to exclude certain dark energy models.

Abstract

We show that collider experiments have the potential to exclude a light scalar field as well as generic models of modified gravity as dark energy candidates. Our mechanism uses the spectrum radiated by black holes and can equally well be applied to determine the number of light degrees of freedom. We obtain the grey body factors for massive scalar particles and calculate the total emissivity. While the Large Hadron Collider (LHC) may not get to the desired accuracy, the measurement is within reach of next generation colliders.