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arXiv · 0709.0869

Scaling Cosmologies from Duality Twisted Compactifications

James E. Lidsey·Karim A. Malik
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Abstract

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.

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James E. Lidsey, Karim A. Malik. 2007-09-06. Scaling Cosmologies from Duality Twisted Compactifications. https://doi.org/10.1088/0264-9381%2F25%2F6%2F065004

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