Cosmic Microwave Background anisotropies and extra dimensions in String Cosmology
Astrophysics
2009-10-31 v3 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
A recently proposed mechanism for large-scale structure in string cosmology --based on massless axionic seeds-- is further analyzed and extended to the acoustic-peak region. Existence, structure, and normalization of the peaks turn out to depend crucially on the overall evolution of extra dimensions during the pre-big bang phase: conversely, precise cosmic microwave background anisotropy data in the acoustic-peak region will provide, within the next decade, a window on string-theory's extra dimensions before their eventual compactification.
Cite
@article{arxiv.astro-ph/9905327,
title = {Cosmic Microwave Background anisotropies and extra dimensions in String Cosmology},
author = {A. Melchiorri and F. Vernizzi and R. Durrer and G. Veneziano},
journal= {arXiv preprint arXiv:astro-ph/9905327},
year = {2009}
}
Comments
4 pages, 3 figures, to appear in Physical Review Letters