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Mixmaster: Fact and Belief
Karlstad University, Faculty of Technology and Science, Department of Physics and Electrical Engineering. (Fysik)
2009 (English)In: Classical and quantum gravity, ISSN 0264-9381, E-ISSN 1361-6382, Vol. 26, no 075016, 1-34 p.Article in journal (Refereed) Published
Abstract [en]

We consider the dynamics towards the initial singularity of Bianchi type IX vacuum and orthogonal perfect fluid models with a linear equation of state. Surprisingly few facts are known about the `Mixmaster' dynamics of these models, while at the same time most of the commonly held beliefs are rather vague. In this paper, we use Mixmaster facts as a base to build an infrastructure that makes it possible to sharpen the main Mixmaster beliefs. We formulate explicit conjectures concerning (i) the past asymptotic states of type IX solutions and (ii) the relevance of the Mixmaster/Kasner map for generic past asymptotic dynamics. The evidence for the conjectures is based on a study of the stochastic properties of this map in conjunction with dynamical systems techniques. We use a dynamical systems formulation, since this approach has so far been the only successful path to obtain theorems, but we also make comparisons with the `metric' and Hamiltonian `billiard' approaches

Place, publisher, year, edition, pages
2009. Vol. 26, no 075016, 1-34 p.
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:kau:diva-9843DOI: 10.1088/0264-9381/26/7/075016OAI: oai:DiVA.org:kau-9843DiVA: diva2:493350
Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2014-01-02Bibliographically approved

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