Time-dependent correlations of inflationary perturbations

Details Time-dependent correlations of inflationary perturbations Time-dependent correlations of inflationary perturbations

2001-11-29

arxiv.org/abs/astro-ph/0111557v1

Europhys.Lett. 56 (2001) 904-910

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

10.1209/epl/i2001-00605-7

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.

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