Living with the Wrong Sign
High Energy Physics - Theory
2014-04-23 v1 General Relativity and Quantum Cosmology
Abstract
We describe a UV complete asymptotically fragile Lorentz-invariant theory exhibiting superluminal signal propagation. Its low energy effective action contains "wrong" sign higher dimensional operators. Nevertheless, the theory gives rise to an S-matrix, which is defined at all energies. As expected for a non-local theory, the corresponding scattering amplitudes are not exponentially bounded on the physical sheet, but otherwise are healthy. We study some of the physical consequences of this S-matrix.
Cite
@article{arxiv.1312.2021,
title = {Living with the Wrong Sign},
author = {Patrick Cooper and Sergei Dubovsky and Ali Mohsen},
journal= {arXiv preprint arXiv:1312.2021},
year = {2014}
}