Oh, wait, O8 de Sitter may be unstable!
High Energy Physics - Theory
2021-03-31 v2
Abstract
We analyze the stability of four-dimensional de Sitter vacua constructed by compactifying massive Type IIA supergravity in the presence of two O8 sources [1]. When embedded in String Theory the first source has a clear interpretation as an O8 plane, but the second one could correspond to either an O8 plane or to an O8 plane with 16 D8-branes on top. We find that this latter solution has a tachyonic instability, corresponding to the D8-branes moving away from the O8 plane. We comment on the possible ways of distinguishing between these sources.
Cite
@article{arxiv.2010.05936,
title = {Oh, wait, O8 de Sitter may be unstable!},
author = {Iosif Bena and G. Bruno De Luca and Mariana Graña and Gabriele Lo Monaco},
journal= {arXiv preprint arXiv:2010.05936},
year = {2021}
}
Comments
19 pages and 4 figures. Version 2: references added