Gravitational Correction to Running of Gauge Couplings
High Energy Physics - Theory
2008-11-26 v2
Abstract
We calculate the contribution of graviton exchange to the running of gauge couplings at lowest non-trivial order in perturbation theory. Including this contribution in a theory that features coupling constant unification does not upset this unification, but rather shifts the unification scale. When extrapolated formally, the gravitational correction renders all gauge couplings asymptotically free.
Keywords
Cite
@article{arxiv.hep-th/0509050,
title = {Gravitational Correction to Running of Gauge Couplings},
author = {Sean P. Robinson and Frank Wilczek},
journal= {arXiv preprint arXiv:hep-th/0509050},
year = {2008}
}
Comments
4 pages, 2 figures; v2: Clarified awkward sentences and notations. Corrected typos. Added references and discussion thereof in introduction. Minor copy editting changes to agree with version to be published in Physical Review Letters