Yun-Song Piao
Published 2005-02-17, updated 2005-04-26Version 2
The universe might experience many cycles with different vacua. The slow-roll inflation may be preceded by kinetic-dominated contraction occurring in "adjacent" vacua during some cycles. In this report we briefly show this phenomenon may lead to a cutoff of primordial power spectrum. Thus in some sense the CMB at large angular scale might encode the information of other vacua.
Comments: 10 pages, 3 eps figures, accepted for publication in PRD, v2 revised with published version
Journal: Phys.Rev. D71 (2005) 087301
Bayesian optimal reconstruction of the primordial power spectrum
Reconstructing the primordial power spectrum
Wavelet Band Powers of the Primordial Power Spectrum from CMB Data
