Technical Naturalness on a Codimension-2 Brane
arXiv:0903.0402 · doi:10.1088/1126-6708/2009/06/014
Abstract
We compute how threshold effects obtained by integrating out a heavy particle localized on a codimension-2 brane influence the properties of the brane and the bulk fields it sources in D=d+2 dimensions. We do so using a recently developed formalism for matching the characteristics of higher codimension branes to the properties of the bulk fields they source. We show that although the dominant dependence on a heavy mass M that is induced in the low-energy codimension-2 tension has the generic size expected, T_2 \propto M^d, the very-low-energy effective potential governing the on-brane curvature once bulk KK modes are integrated out can be additionally suppressed, by factors of order k^2 M^d, where k is the bulk gravitational coupling. In the special case of a codimension-2 brane in a 6D supersymmetric bulk we also estimate the size of the contributions of short-wavelength bulk loops near the brane, and find these can be similarly suppressed.
3 figures, 22 pages plus appendices
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Cited by in corpus (10)
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- Codimension-2 Brane-Bulk Matching: Examples from Six and Ten Dimensions
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- Bulk Stabilization, the Extra-Dimensional Higgs Portal and Missing Energy in Higgs Events
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