Cosmological influence of super-Hubble perturbations
Astrophysics
2014-10-13 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
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.
Keywords
Cite
@article{arxiv.astro-ph/0410541,
title = {Cosmological influence of super-Hubble perturbations},
author = {Edward W. Kolb and Sabino Matarrese and Alessio Notari and Antonio Riotto},
journal= {arXiv preprint arXiv:astro-ph/0410541},
year = {2014}
}
Comments
Four pages, no figures