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Asymptotic analysis of spatially inhomogeneous stiff and ultra-stiff cosmologies

A. A. Coley·W. C. Lim
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Abstract

We calculate analytically the past asymptotic decay rates close to an initial singularity in general G_0 spatially inhomogeneous perfect fluid models with an effective equation of state which is stiff or ultra-stiff (i.e., $γ\ge 2$). These results are then supported by numerical simulations in a special class of G_2 cosmological models. Our analysis confirms and extends the BKL conjectures and lends support to recent isotropization results in cosmological models of current interest (with $γ> 2$).

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A. A. Coley, W. C. Lim. 2005-06-18. Asymptotic analysis of spatially inhomogeneous stiff and ultra-stiff cosmologies. https://doi.org/10.1088/0264-9381%2F22%2F14%2F016

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