Scaling Cosmologies from Duality Twisted Compactifications

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

Oscillating moduli fields can support a cosmological scaling solution in the presence of a perfect fluid when the scalar field potential satisfies appropriate conditions. We examine when such conditions arise in higher-dimensional, non-linear sigma-models that are reduced to four dimensions under a generalized Scherk-Schwarz compactification. We show explicitly that scaling behaviour is possible when the higher-dimensional action exhibits a global SL(n,R) or O(2,2) symmetry. These underlying symmetries can be exploited to generate non-trivial scaling solutions when the moduli fields have non-canonical kinetic energy. We also consider the compactification of eleven-dimensional vacuum Einstein gravity on an elliptic twisted torus.
21 pages, 3 figures

Keywords

High Energy Physics - Theory, Astrophysics, General Relativity and Quantum Cosmology

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/193587

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0709.0869
 http://arxiv.org/abs/0709.0869
 Class.Quant.Grav.25:065004,2008
 doi:10.1088/0264-9381/25/6/065004

Collections

arXiv