Possible Explanation to Low CMB Quadrupole
Astrophysics
2009-11-10 v2
Abstract
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.
Cite
@article{arxiv.astro-ph/0502343,
title = {Possible Explanation to Low CMB Quadrupole},
author = {Yun-Song Piao},
journal= {arXiv preprint arXiv:astro-ph/0502343},
year = {2009}
}
Comments
10 pages, 3 eps figures, accepted for publication in PRD, v2 revised with published version