Transient Pulses from Exploding Primordial Black Holes as a Signature of an Extra Dimension

TL;DR

This paper proposes that evaporating primordial black holes in the presence of extra dimensions could produce detectable electromagnetic pulses, providing a novel observational signature for extra dimensions at subatomic scales.

Contribution

It introduces a model linking black hole evaporation in extra dimensions to observable electromagnetic pulses, connecting astrophysical phenomena with particle physics energy scales.

Findings

Detectable electromagnetic pulses from primordial black holes could indicate extra dimensions.

Transient radio-pulse searches can probe the electroweak energy scale.

The relationship between pulse Lorentz factor and TeV energy scale is derived.

Abstract

An evaporating black hole in the presence of an extra spatial dimension would undergo an explosive phase of evaporation. We show that such an event, involving a primordial black hole, can produce a detectable, distinguishable electromagnetic pulse, signaling the existence of an extra dimension of size $L\sim10^{-18}-10^{-20}$ m. We derive a generic relationship between the Lorentz factor of a pulse-producing "fireball" and the TeV energy scale. For an ordinary toroidally compactified extra dimension, transient radio-pulse searches probe the electroweak energy scale ($\sim$0.1 TeV), enabling comparison with the Large Hadron Collider.