Theory Seminar

Higher order clockwork gravity

by Florian Niedermann

Europe/Berlin
MPI Meeting rooms

MPI Meeting rooms

Description
We present a higher order generalisation of the recently proposed clockwork mechanism starting from an underlying nonlinear multigravity theory with a single scale and nearest neighbor ghost-free interactions. Without introducing any hierarchies in the underlying potential, this admits a family of Minkowski vacua which support a massless graviton whose coupling strength to matter is exponentially smaller than the theory’s quantum gravity scale. In particular, we present a TeV scale multigravity model with O(10) sites that contains a massless mode whose coupling is Planckian, and a tower of massive modes starting at a TeV mass range and with TeV strength couplings. This suggests an application to the electroweak hierarchy problem in the spirit of renowned warped and large extra dimension proposals.