Spectra of BPS Strings in 6d Supergravity and the Swampland
Abstract
We explore BPS strings in supergravity theories in six-dimensions and related Swampland Conjectures. We first propose a general modular ansatz for bootstrapping elliptic genera of 2d worldvolume theories on strings in the 6d theories. By employing mirror symmetry on F-theory examples, we explicitly compute the elliptic genera and validate our ansatz. We extend this approach to investigate BPS strings and their spectrum in non-geometric 6d theories which have no known F-theory constructions, and confirm the Swampland conjectures, including the Weak Gravity Conjecture, Distance Conjecture, and Emergent String Conjecture. We also discuss tensionless little strings that emerge near infinite-distance limits of strong gauge coupling in the moduli space of certain special theories.
Keywords
Cite
@article{arxiv.2310.12219,
title = {Spectra of BPS Strings in 6d Supergravity and the Swampland},
author = {Hirotaka Hayashi and Hee-Cheol Kim and Minsung Kim},
journal= {arXiv preprint arXiv:2310.12219},
year = {2023}
}
Comments
72 pages, v2: minor corrections and references added