Gravitational Correction to Running of Gauge Couplings

Details Gravitational Correction to Running of Gauge Couplings Gravitational Correction to Running of Gauge Couplings

2005-09-07

arxiv.org/abs/hep-th/0509050v2

Phys.Rev.Lett.96:231601,2006

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 2 figures; v2: Clarified awkward sentences and notations. Corrected typos. Added references and discussion thereof in

Scientific paper

10.1103/PhysRevLett.96.231601

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.

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