String Vacua with Massive boson-fermion Degeneracy & Non-Singular Cosmology

TL;DR

This paper explores string theory vacua with Massive boson-fermion Degeneracy Symmetry (MSDS) and proposes a string-based mechanism that addresses the Hagedorn divergence and initial singularity issues in early universe cosmology.

Contribution

It introduces a novel class of string vacua with MSDS and links their properties to resolving key cosmological singularities and divergences.

Findings

MSDS vacua exhibit a non-geometrical early universe phase.

A stringy mechanism resolves Hagedorn divergences.

The approach offers a non-singular cosmological evolution.

Abstract

We discuss marginal deformations of string vacua with Massive boson-fermion Degeneracy Symmetry (MSDS), in connection to the cosmological evolution of the Universe from an early non-geometrical era. In particular, we discuss recent results on the stringy mechanism that resolves both Hagedorn divergences and the Initial Singularity problem. Based on a talk given at the Workshop on Cosmology & Strings, Corfu Institute, Greece, Sept 10, 2010.