Landscape, Swampland, and Extra Dimensions
Abstract
By combining swampland conjectures with observational data, it was recently suggested that the cosmological hierarchy problem (i.e. the smallness of the dark energy in Planck units) could be understood as an asymptotic limit in field space, corresponding to a decompactification of one extra (dark) dimension of a size in the micron range. In these Proceedings we examine the fundamental setting of this framework and discuss general aspects of the effective low energy theory inherited from properties of the overarching string theory. We then explore some novel phenomenology encompassing the dark dimension by looking at potential dark matter candidates, decoding neutrino masses, and digging into new cosmological phenomena.
Keywords
Cite
@article{arxiv.2405.04427,
title = {Landscape, Swampland, and Extra Dimensions},
author = {Luis Anchordoqui and Ignatios Antoniadis and Dieter Lust},
journal= {arXiv preprint arXiv:2405.04427},
year = {2024}
}
Comments
38 pages, 4 figures. Based on talks given by the authors on several conferences in 2023 and 2024, revised version with minor changes and refs. added