Asymptotics of linearized cosmological perturbations
Paul T. Allen,Alan D. Rendall +1 more
TLDR
In this paper, the authors prove results on the asymptotic behavior of scalar perturbations both in the approach to the initial singularity of the background model and at late times.Abstract:
In cosmology an important role is played by homogeneous and isotropic solutions of the Einstein–Euler equations and linearized perturbations of these. This paper proves results on the asymptotic behavior of scalar perturbations both in the approach to the initial singularity of the background model and at late times. The main equation of interest is a linear hyperbolic equation whose coefficients depend only on time. Expansions for the solutions are obtained in both asymptotic regimes. In both cases, it is shown how general solutions with a linear equation of state can be parametrized by certain functions which are coefficients in the asymptotic expansion. For some nonlinear equations of state, it is found that the late-time asymptotic behavior is qualitatively different from that in the linear case.read more
Citations
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Generic Blow-Up Results for the Wave Equation in the Interior of a Schwarzschild Black Hole
TL;DR: In this article, the authors study the behavior of smooth solutions to the wave equation in the interior of a fixed Schwarzschild black hole and obtain a full asymptotic expansion for all solutions towards the singular hypersurface.
Journal ArticleDOI
Future non-linear stability for solutions of the Einstein-Vlasov system of Bianchi types II and VI0
TL;DR: Nungesser et al. as discussed by the authors showed that the future nonlinear stability of non-diagonal spacetimes of the Bianchi types II and VI0 is asymptotically diagonal.
Journal ArticleDOI
Generic blow-up results for the wave equation in the interior of a Schwarzschild black hole
TL;DR: In this article, the authors study the behavior of smooth solutions to the wave equation in the interior of a fixed Schwarzschild black hole and obtain a full asymptotic expansion for all solutions towards the singular hypersurface.
Journal ArticleDOI
A Unified Approach to the Klein–Gordon Equation on Bianchi Backgrounds
TL;DR: In this article, the authors studied the asymptotic behavior of solutions to the Klein-Gordon equation on Bianchi spacetime with silent singularities and showed that these solutions converge to zero in the direction of the singularity.
Posted Content
Asymptotically Kasner-like singularities
TL;DR: In this paper, the authors prove existence, uniqueness and regularity of solutions to the Einstein vacuum equations taking the form of the singular and asymptotically Kasner-like solutions.
References
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Quiescent cosmological singularities
Lars Andersson,Alan D. Rendall +1 more
TL;DR: The most detailed existing proposal for the structure of spacetime singularities originates in the work of Belinskii, Khalatnikov and Lifshitz as discussed by the authors, who showed rigorously the correctness of this proposal in the case of analytic solutions of the Einstein equations coupled to a scalar field or stiff fluid.
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