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The Instabilities of Bianchi Type IX Einstein Static Universes

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arxiv 1108.3962 v2 pith:SJZSPGYT submitted 2011-08-19 gr-qc astro-ph.COhep-th

John D. Barrow , Kei Yamamoto This is my paper · ORCID
classification gr-qcastro-ph.COhep-th
keywords bianchieinsteinstatictypeuniverseequationsfindfluids
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We investigate the stability of the Einstein static universe as a non-LRS Bianchi type IX solution of the Einstein equations in the presence of both non-tilted and tilted fluids. We find that the static universe is unstable to homogeneous perturbations of Bianchi type IX to the future and the past.

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  1. Friedmann-Lema\^itre universes and their metamorphoses

    gr-qc 2024-11 reject novelty 5.0 of 10

    The FL equations are claimed to reduce to four inequivalent versal unfoldings that generate nonsmooth, singularity-free 'metamorphosing' cosmologies.

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