Tensor modes on the string theory landscape
Abstract
We attempt an estimate for the distribution of the tensor mode fraction over the landscape of vacua in string theory. The dynamics of eternal inflation and quantum tunneling lead to a kind of democracy on the landscape, providing no bias towards large-field or small-field inflation regardless of the class of measure. The tensor mode fraction then follows the number frequency distributions of inflationary mechanisms of string theory over the landscape. We show that an estimate of the relative number frequencies for small-field vs large-field inflation, while unattainable on the whole landscape, may be within reach as a regional answer for warped Calabi-Yau flux compactifications of type IIB string theory.
Cite
@article{arxiv.1206.4034,
title = {Tensor modes on the string theory landscape},
author = {Alexander Westphal},
journal= {arXiv preprint arXiv:1206.4034},
year = {2015}
}
Comments
LaTeX, 1+55 pages, 4 figures, v2: citations added, extended and more precise discussion of the vacuum count ratios in the 'landscape Drake equation' in section 4.4, 4.5 and in the conclusion 5