Cosmological influence of super-Hubble perturbations
arXiv:astro-ph/0410541 · doi:10.1142/S0217732305018682
Abstract
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.
arXiv commentFour pages, no figures
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