Graviton loops and brane observables

Details Graviton loops and brane observables Graviton loops and brane observables

2001-03-10

arxiv.org/abs/hep-ph/0103104v2

JHEP 0106:005,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

39 pages + 4 eps figures, JHEP style latex document. The paper is composed by a theoretical part, followed (after page 21) by

Scientific paper

10.1088/1126-6708/2001/06/005

We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly account for brane fluctuations and to correctly identify physical observables. Our results correct some confusing claims in the literature. We discuss the implications of graviton loops on electroweak precision observables and on the muon g-2 in models with large extra dimensions. We model the leading effects, not controlled by effective field theory, by introducing a hard momentum cut-off.

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