art%3A10.1007%2FJHEP11%282011%29039.pdf (416.56 kB)
Brane world models need low string scale
journal contribution
posted on 2023-06-15, 13:55 authored by Ignatios Antoniadis, Michael Atkins, Xavier CalmetXavier CalmetModels with large extra dimensions offer the possibility of the Planck scale being of order the electroweak scale, thus alleviating the gauge hierarchy problem. We show that these models suffer from a breakdown of unitarity at around three quarters of the low effective Planck scale. An obvious candidate to fix the unitarity problem is string theory. We therefore argue that it is necessary for the string scale to appear below the effective Planck scale and that the first signature of such models would be string resonances. We further translate experimental bounds on the string scale into bounds on the effective Planck scale.
History
Publication status
- Published
File Version
- Published version
Journal
Journal of High Energy PhysicsISSN
1029-8479Publisher
SpringerExternal DOI
Issue
11Volume
2011Page range
039Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes