Brane fluctuations and suppression of Kaluza-Klein mode couplings
arXiv:hep-ph/9906549 · doi:10.1103/PhysRevLett.83.3601
Abstract
In higher dimensional models where the gauge and gravity fields live in the bulk and the matter fields only in a brane, we point out the importance of the brane (transverse) coordinate modes, which are the Nambu-Goldstone bosons appearing as a result of spontaneous breaking of the translation symmetry. The brane recoil effect suppresses the couplings of higher Kaluza-Klein modes to the matter, and gives a natural resolution to the divergence problem caused by the exchange of infinitely many Kaluza-Klein modes.
11 pages, 1 eps figure, references added