Shortcuts in particle production in a toroidal compactified spacetime

TL;DR

This paper explores particle production mechanisms in a universe with toroidal extra dimensions and cosmic strings, analyzing effects of spacetime expansion, torsion, and topology on particle creation.

Contribution

It generalizes particle production analysis to toroidal compactifications with extra dimensions and includes effects of torsion and topological transformations.

Findings

Particle production is influenced by spacetime topology and torsion.

Toroidal compactification alters particle creation rates.

Topological transformations have significant physical consequences.

Abstract

We investigate the particle production in a toroidal compactified spacetime due to the expansion of a Friedmann cosmological model in R3 x S1 outside a U(1) local cosmic string. The case of a Friedmann spacetime is also investigated when torsion is incorporated in the connection. We present a generalization to toroidal compactification of p extra dimensions, where the topology is given by R3 x T^p. Some implications are presented and discussed. Besides the dynamics of spacetime, we also investigate in details the physical consequences of the topological transformations.