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Gravitational correction to running of gauge couplings. (English) Zbl 1228.83109
Summary: We calculate the contribution of graviton exchange to the running of gauge couplings at lowest nontrivial 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.

83E30 String and superstring theories in gravitational theory
81T13 Yang-Mills and other gauge theories in quantum field theory
81T17 Renormalization group methods applied to problems in quantum field theory
Full Text: DOI arXiv
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