Correction to the Running of Gauge Couplings out of Extra Dimensional Gravity

2008/09/11 by Feng Wu, Ming Zhong, Wu, Feng +1
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.48550/arxiv.0809.1913

4 pages, 1 figure

arxiv created 2008/09/11 · arxiv updated 2009/12/01

Abstract

We study the gravitational correction to the gauge couplings in the extra dimension model where the gravity propagates in the (4+n)-dimensional bulk. We show by explicit calculation in the background field method that the one-loop correction coming from graviton Kaluza-Klein states is nontrivial and tends to make the theory anti-asymptotically free. For the theory characterized with asymptotic freedom, the correction will induce a nontrivial UV-stable fixed point. This may lead to an interesting possibility that the non-abelian gauge coupling constants g₂ and g₃ in the SM and that of the gravity g_κ unify at the fixed point in the limit of high energy scale.

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