Dualities, CPT Symmetry and Dimensional Reduction in String Theory

TL;DR

This paper explores the role of dualities, CPT symmetry, and dimensional reduction in string theory, addressing topological inflation, baryon asymmetry, and quantum cosmology in reduced models.

Contribution

It introduces mechanisms linking string dualities and CPT violation to cosmological phenomena and analyzes quantum cosmology in dimensionally reduced string-inspired models.

Findings

Dualities facilitate topological inflation in supergravity models.

String interactions violating CPT can generate baryon asymmetry.

Quantum cosmology of reduced Einstein-Yang-Mills systems offers new insights.

Abstract

In this lecture we address the following issues in the context of string theories: i) The role played by S and T dualities in obtaining topological inflation in N=1 supergravity models, ii) A mechanism to generate the baryon asymmetry of the Universe based on the string interactions that violate CPT symmetry and iii) The quantum cosmology of the dimensionally reduced multidimensional Einstein-Yang-Mills system.