Time-dependent correlations of inflationary perturbations

Abstract

We show that if the primordial classical perturbations were generated by the gravitational particle creation during inflation, and followed by an evolution of quantum-to-classical transition,the time dependent correlation of these perturbations is long-tailed with a correlation time larger than the Hubble-time. Consequently, the inflationary perturbations are locally scale-scale correlated. Hence, the interaction of the fields during inflation can be explored via the detection of the local scale-scale correlation of the CMB fluctuations.

7 pages. To appear in Europhysics Letters v.56, no.6, Dec. 15th

References in corpus (3)

• Do wavelets really detect non-Gaussianity in the 4-year COBE data?
• Non-Gaussianity and the recovery of the mass power spectrum from the Ly$\alpha$ forest
• A relativistic calculation of super-Hubble suppression of inflation with thermal dissipation

Cited by in corpus (4)

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• Trapping effects on inflation
• Classicalization of Quantum Fluctuations at the Planck Scale in the R_h=ct Universe
• Off-equilibrium dynamics of the primordial perturbations in the inflationary universe: the O(N) model