Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Future of Tilted Bianchi Universes   An asymptotic stability analysis of spatially homogeneous models of Bianchi
type containing tilted perfect fluids is performed. Using the known attractors
for the non-tilted Bianchi type universes, we check whether they are stable
against perturbations with respect to tilted perfect fluids. We perform the
analysis for all Bianchi class B models and the Bianchi type VI_0 model. In
particular, we find that none of the non-tilted equilibrium points are stable
against tilted perfect fluids stiffer than radiation. We also indicate parts of
the phase space where new tilted exact solutions might be found.

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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: stat