Exponential Decay for Small Non-Linear Perturbations of Expanding Flat Homogeneous Cosmologies
classification
🌀 gr-qc
keywords
cosmologiesdecayexpandingflathomogeneousnon-linearperturbationssmall
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It is shown that during expanding phases of flat homogeneous cosmologies all small enough non-linear perturbations decay exponentially. This result holds for a large class of perfect fluid equations of state, but notably not for very ``stiff'' fluids as the pure radiation case.
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