Brane Couplings from Bulk Loops
Howard Georgi, Aaron K. Grant, Girma Hailu
Abstract
We compute loop corrections to the effective action of a field theory on a five-dimensional S1/Z2 orbifold. We find that the quantum loop effects of interactions in the bulk produce infinite contributions that require renormalization by four-dimensional couplings on the orbifold fixed planes. Thus bulk couplings give rise to renormalization group running of brane couplings.
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