Solution of the Size and Horizon Problems from Classical String Geometry

TL;DR

This paper presents a string cosmology model derived from classical string geometry that addresses the size and horizon problems of Big Bang cosmology, aligning with the Transplanckian Censorship Conjecture and exploring perturbation evolution.

Contribution

It introduces a novel string cosmology background that solves fundamental cosmological problems while remaining consistent with recent theoretical conjectures.

Findings

Addresses size and horizon problems using string geometry

Compatible with Transplanckian Censorship Conjecture

Initial analysis of cosmological perturbations

Abstract

In a recent paper we developed a string cosmology background from classical string geometry. Here, we show that this background yields a solution to the size and horizon problems of Standard Big Bang cosmology while remaining compatible with the Transplanckian Censorship Conjecture. We also take a first look at the evolution of cosmological perturbations in this model.