Graviton loops and brane observables
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0103104,
title = {Graviton loops and brane observables},
author = {R. Contino and L. Pilo and R. Rattazzi and A. Strumia},
journal= {arXiv preprint arXiv:hep-ph/0103104},
year = {2014}
}
Comments
9 pages + 4 eps figures, JHEP style latex document. The paper is composed by a theoretical part, followed (after page 21) by a phenomenological part. v2: version published in JHEP, few typos corrected. v3: few additional typos corrected in the Appendix