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Gravitational Correction to Running of Gauge Couplings
Physical Review Letters
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.doi:10.1103/physrevlett.96.231601 pmid:16803367 fatcat:xav7vfaq7jcfte47lflrx2ojny