Vacuum Fluctuations as a Source of Adiabatic Perturbations in Power Law Inflationary Cosmology

Abstract

An analysis of the decoherence of quantum fluctuations shows that production of classical adiabatic density perturbations may not take place in models of power-law inflation with power 1< p < 3. Some consequences for models of extended inflation are pointed out. In general, the condition for decoherence places new constraint on inflationary models, which does not depend on often complicated subsequent evolution.

arXiv comment6 pages, Latex. Accepted for Mod Phys Lett A

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