On The Warped Heterotic Axion
Abstract
We study the axion in a warped heterotic background. It is shown that the axion decay constant, f_a, is sensitive to the warped mass scale of the throat. As an explicit model, we construct a novel AdS-like geometry in heterotic string theory. We demonstrate that in this background f_a is given by the mass scale of the longest throat in the compactification. The question of obtaining f_a within the required bound 10^9--10^12 GeV is reduced to the construction of a throat inside the heterotic string theory compactification with warped mass scale in the above range. This provides a natural mechanism for realising the axion in heterotic string theory.
Cite
@article{arxiv.0803.3828,
title = {On The Warped Heterotic Axion},
author = {Keshav Dasgupta and Hassan Firouzjahi and Rhiannon Gwyn},
journal= {arXiv preprint arXiv:0803.3828},
year = {2014}
}
Comments
Latex, 31 pages, no figures; v2: some typos corrected, a short discussion on standard model embedding, and references added. Final version to appear in JHEP