Accelerated universes from type IIA compactifications

Abstract

We study slow-roll accelerating cosmologies arising from geometric compactifications of type IIA string theory on T-6 = (Z(2) x 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 0.1. 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.