Gravitational Particle Production in Spinning Cosmic String Spacetimes

TL;DR

This paper investigates how spinning cosmic strings emit particles over time, leading to a loss of angular momentum, by comparing particle production rates between spinning and non-spinning cosmic string spacetimes.

Contribution

It introduces a method to calculate particle production rates associated with the angular momentum loss of spinning cosmic strings.

Findings

Particle production causes angular momentum loss in spinning cosmic strings.

The rate of particle emission is quantified between different spacetime states.

Spinning cosmic strings emit particles, affecting their evolution over time.

Abstract

The spontaneous loss of angular momentum of a spinning cosmic string due to particle emission is discussed. The rate of particle production between two assymptotic spacetimes: the spinning cosmic string spacetime in the infinite past and a non-spinning cosmic string spacetime in the infinite future is calculated.