The origin of scale-scale correlations of the density perturbations during inflation

Abstract

We show that scale-scale correlations are a generic feature of slow-roll inflation theories. These correlations result from the long-time tails characteristic of the time dependent correlations because the long wavelength density perturbation modes are diffusion-like. A relationship between the scale-scale correlations and time-correlations is established providing a way to reveal the time correlations of the perturbations during inflation. This mechanism provides for a testable prediction that the scale-scale correlations at two different spatial points will vanish.

Accepted for publication, International Journal of Modern Physics, vol. 8 No.6 (Dec 1999)

References in corpus (2)

• Evidence for Scale-Scale Correlations in the Cosmic Microwave Background Radiation
• Mass Density Perturbations from Inflation with Thermal Dissipation