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Future stability of the FLRW fluid solutions in the presence of a positive cosmological constant

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arxiv 1505.00857 v4 pith:DGSRI6XT submitted 2015-05-05 gr-qc

classification gr-qc
keywords futuresolutionsconstantcosmologicaleinstein-eulerequationequationsflrw
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abstract

We introduce a new method for establishing the future non-linear stability of perturbations of FLRW solutions to the Einstein-Euler equations with a positive cosmological constant and a linear equation of state of the form $p = K \rho$. The method is based on a conformal transformation of the Einstein-Euler equations that compactifies the time domain and can handle the equation of state parameter values $0<K\leq 1/3$ in a uniform manner. It also determines the asymptotic behavior of the perturbed solutions in the far future.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Stability of fluids in spacetimes with decelerated expansion

    gr-qc 2025-01 accept novelty 7.0 of 10

    Quiet barotropic fluids are nonlinearly stable on decelerating FLRW spacetimes exactly for K < 1 - 2/(3α), with dust and radiation shown to shock for α ≤ 1/2 and α ≤ 1, respectively.

  2. Instability of Slowly Expanding FLRW Spacetimes

    gr-qc 2025-02 conditional novelty 6.0 of 10

    Numerical simulations of Gowdy-symmetric perturbations of decelerated FLRW Einstein-Euler solutions indicate finite-time shock formation for every linear equation of state p=K rho with 0<=K<=1.

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