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arXiv · hep-th/0209022

Inhomogeneous M-Theory Cosmologies

Alan A. Coley·R. J. van den Hoogen
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Abstract

We study a class of inhomogeneous and anisotropic $G_2$ string cosmological models. In the case of separable $G_2$ models we show that the governing equations reduce to a system of ordinary differential equations. We focus on a class of separable $G_2$ M-theory cosmological models, and study their qualitative behaviour (a class of models with time-reversed dynamics is also possible). We find that generically these inhomogeneous M-theory cosmologies evolve from a spatially inhomogeneous and negatively curved model with a non-trivial form field towards spatially flat and spatially homogeneous dilaton-moduli-vacuum solutions with trivial form--fields. The late time behaviour is the same as that of spatially homogeneous models previously studied. However, the inhomogeneities are not dynamically insignificant at early times in these models.

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Alan A. Coley, R. J. van den Hoogen. 2002-09-03. Inhomogeneous M-Theory Cosmologies. https://doi.org/10.1063/1.1504886

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