Time-dependent correlations of inflationary perturbations

W. L. Lee*, L. Z. Fang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)904-910
Number of pages7
JournalEurophysics Letters
Issue number6
Publication statusPublished - 2001 Dec 11
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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