A Note on a Class of Cosmological String Backgrounds

TL;DR

This paper investigates a specific class of anisotropic four-dimensional string backgrounds, examining their expansion, singularities, and the effects of O(3,3) duality transformations on these properties.

Contribution

It introduces a detailed analysis of a particular class of cosmological string backgrounds and explores the impact of duality symmetries on their structure.

Findings

Characterization of expansion and singularity features of the backgrounds

Demonstration of how O(3,3) duality transforms these backgrounds

Insights into the role of duality in cosmological string models

Abstract

We study a class of four dimensional, anisotropic string backgrounds and analyse their expansion and singularity structure. In particular we will see how O(3,3) duality acts on this class.