Reheating in holographic cosmology and connecting to $\Lambda$-MSSM constructions for particle physics

TL;DR

This paper models the transition from holographic to standard cosmology, connecting it to MSSM constructions, and discusses reheating, supersymmetry breaking, and the cosmological constant within a string theory framework.

Contribution

It introduces a novel approach to connect holographic cosmology with MSSM models through $ ext{α'}$ corrections and cosmological reheating mechanisms.

Findings

Successful transition to MSSM via $ ext{α'}$ corrections

Natural explanation for observed cosmological constant

Supersymmetry breaking near current energy scales

Abstract

In this paper we model the transition from the non-geometric holographic cosmology regime, to the usual radiation dominated (RD) cosmology, known as reheating in the case of (perturbative) inflation. We find that we can easily transition into any MSSM construction of intersecting D6-branes, via $\alpha'$ corrections in the 3 dimensional field theory as well as in cosmology, followed by cosmological reheating via S-NS5-branes. Moreover, we can naturally obtain the (true) cosmological constant $\Lambda$ of the observed order of magnitude. The resulting supersymmetry breaking is just outside the currently observed energies. The model is consistent with large (TeV scale) extra dimensions, but it prefers smaller ones, and the string scale is generically low.