# The String landscape, black holes and gravity as the weakest force

@article{ArkaniHamed2007TheSL,
title={The String landscape, black holes and gravity as the weakest force},
author={Nima Arkani-Hamed and Lubo{\vs} Motl and Alberto Nicolis and Cumrun Vafa},
journal={Journal of High Energy Physics},
year={2007},
volume={2007},
pages={060-060}
}
• Published 2 January 2006
• Physics
• Journal of High Energy Physics
We conjecture a general upper bound on the strength of gravity relative to gauge forces in quantum gravity. This implies, in particular, that in a four-dimensional theory with gravity and a U(1) gauge field with gauge coupling g, there is a new ultraviolet scale Λ = gMPl, invisible to the low-energy effective field theorist, which sets a cutoff on the validity of the effective theory. Moreover, there is some light charged particle with mass smaller than or equal to Λ. The bound is motivated by…
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