Geometric Bremsstrahlung in the Early Universe

TL;DR

This paper explores a novel form of bremsstrahlung radiation caused by the universe's expansion, analyzing photon emission from particles decelerated by cosmic geometry, especially in high momentum scenarios.

Contribution

It introduces the concept of geometric bremsstrahlung, highlighting its independence from detailed cosmic expansion behavior at high momenta.

Findings

Photon emission is induced by the universe's geometry.

Transition probability becomes independent of expansion details at high momentum.

The study provides a new perspective on particle radiation in cosmological contexts.

Abstract

We discuss photon emission from particles decelerlated by the cosmic expansion. This can be interpretated as a kind of bremsstrahlung induced by the Universe geometry. In the high momentum limit its transition probability does not depend on detailed behavior of the expansion.