English

Accelerated Universes from type IIA Compactifications

High Energy Physics - Theory 2015-06-17 v1

Abstract

We study slow-roll accelerating cosmologies arising from geometric compactifications of type IIA string theory on T6/(Z2×Z2)T^{6}/(\mathbb{Z}_{2}\,\times\,\mathbb{Z}_{2}). With the aid of a genetic algorithm, we are able to find quasi-de Sitter backgrounds with both slow-roll parameters of order 0.10.1. Furthermore, we study their evolution by numerically solving the corresponding time-dependent equations of motion, and we show that they actually display a few e-folds of accelerated expansion. Finally, we comment on their perturbative reliability.

Keywords

Cite

@article{arxiv.1310.8300,
  title  = {Accelerated Universes from type IIA Compactifications},
  author = {Johan Blåbäck and Ulf Danielsson and Giuseppe Dibitetto},
  journal= {arXiv preprint arXiv:1310.8300},
  year   = {2015}
}

Comments

22 pages, 3 figures and 5 tables

R2 v1 2026-06-22T01:57:48.643Z