We study slow-roll accelerating cosmologies arising from geometric compactifications of type IIA string theory on T6/(Bbb Z2 × Bbb Z2). 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.
Blaback, J., Danielsson, U.h., Dibitetto, G. (2014). Accelerated Universes from type IIA Compactifications. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 03 [10.1088/1475-7516/2014/03/003].
Accelerated Universes from type IIA Compactifications
J. Blaback;G. Dibitetto
2014-01-01
Abstract
We study slow-roll accelerating cosmologies arising from geometric compactifications of type IIA string theory on T6/(Bbb Z2 × Bbb Z2). 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
