Cosmological influence of super-Hubble perturbations

Details Cosmological influence of super-Hubble perturbations Cosmological influence of super-Hubble perturbations

2004-10-22

arxiv.org/abs/astro-ph/0410541v2

Mod.Phys.Lett. A20 (2005) 2705-2710

Astronomy and Astrophysics

Astrophysics

Four pages, no figures

Scientific paper

10.1142/S0217732305018682

The existence of cosmological perturbations of wavelength larger than the Hubble radius is a generic prediction of the inflationary paradigm. We provide the derivation beyond perturbation theory of a conserved quantity which generalizes the linear comoving curvature perturbation. As a by-product, we show that super-Hubble-radius (super-Hubble) perturbations have no physical influence on local observables e.g., the local expansion rate) if cosmological perturbations are of the adiabatic type.

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