Inflationary cosmology of the extreme cosmic string

TL;DR

This paper explores the cosmological implications of extreme cosmic strings, proposing they can be viewed as chains of Planck-scale universes undergoing continuous self-regeneration through chaotic inflation.

Contribution

It introduces a novel model linking extreme cosmic strings to unbounded chains of universe pairs formed during primordial phase transitions.

Findings

Kinked extreme strings can be modeled as chains of Planck-sized universes.

Such universe pairs undergo endless self-regeneration via chaotic inflation.

Probability measures support the formation of these universe chains during early universe phases.

Abstract

Starting with a study of the cosmological solution to the Einstein equations for the internal spacetime of an extreme supermassive cosmic string kink, and by evaluating the probability measure for the formation of such a kink in semiclassical approximation using a minisuperspace with the appropriate symmetry, we have found a set of arguments in favor of the claim that the kinked extreme string can actually be regarded as a unbounded chain of pairs of Planck- sized universes. Once one such universe pairs is created along a primordial phase transition at the Planck scale, it undergoes an endless process of continuous self-regeneration driven by chaotic inflation in each of the universes forming the pair.