The evolution of cosmic string loops in Kerr-de Sitter spacetimes

TL;DR

This paper derives the equations governing cosmic string loops in Kerr-de Sitter spacetimes and numerically analyzes their evolution, showing that loops can expand and persist unless they are too small.

Contribution

It introduces the first derivation and numerical analysis of cosmic string loop equations specifically in Kerr-de Sitter backgrounds.

Findings

Loops can expand and survive in Kerr-de Sitter spacetimes.

Small loops tend to decay or not persist.

Numerical solutions illustrate the evolution dynamics.

Abstract

The equation of cosmic string loops in Kerr-de Sitter spacetimes is derived. Having solved the equation numerically, we find that the loops can expand and exist except for too small ones.