Oscillatory Behaviour in Homogeneous String Cosmology Models

TL;DR

This paper demonstrates that certain homogeneous string cosmology models exhibit oscillatory behavior similar to generic string cosmologies, and confirms the applicability of the 'Kasner-free-flights plus collisions-on-potential-walls' model in known superstring solutions.

Contribution

It shows that Bianchi type I models with electric p-form fields can replicate oscillatory dynamics of string cosmologies and validates the 'Kasner-wall' picture in non-chaotic superstring solutions.

Findings

Homogeneous Bianchi type I models exhibit oscillatory behavior.

The 'Kasner-free-flights plus collisions-on-potential-walls' picture applies to known superstring solutions.

Oscillatory dynamics are similar to those in generic string cosmologies.

Abstract

Some spatially homogeneous Bianchi type I cosmological models filled with homogeneous ``electric'' $p$-form fields are shown to mimic the never-ending oscillatory behaviour of generic string cosmologies established recently. The validity of the ``Kasner-free-flights plus collisions-on-potential-walls'' picture is also illustrated in the case of known, non-chaotic, superstring solutions.