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Accelerated universes from type IIA compactifications

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Published 4 March 2014 • , , Citation Johan Blåbäck et al JCAP03(2014)003 DOI 10.1088/1475-7516/2014/03/003

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1 Institutionen för fysik och astronomi, Uppsala Universitet, Box 803, Uppsala SE-751 08, Sweden

Dates

  1. Received 26 November 2013
  2. Accepted 20 February 2014
  3. Published

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1475-7516/2014/03/003

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.

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10.1088/1475-7516/2014/03/003