Localization of graviphoton and graviscalar on the brane
Abstract
The question of whether the KaluzaKlein (KK) graviphoton $h_{5\mu}$ and graviscalar $h_{55}$ are localized or not on the brane is one of the important issues. In this letter, we address this problem in five dimensions. Here we consider the massless (zeromode) propagations without requiring the Z$_2$symmetry on $h_{5\mu}$. We obtain the graviton $h_{\mu\nu}$, graviphoton, and graviscalar exchange amplitudes on shell. We find that the graviscalar has a tachyonic mass. It turns out that $h_{5\mu}$ admits the localized zeromodes on the brane while $h_{55}$ does not have a localized zeromode. This is contrasted to the fact that the bulk spin0 field has a localized zeromode on the brane but the bulk spin1 field does not have a localized solution in five dimensions.
 Publication:

arXiv eprints
 Pub Date:
 September 2000
 arXiv:
 arXiv:hepth/0009117
 Bibcode:
 2000hep.th....9117M
 Keywords:

 High Energy Physics  Theory
 EPrint:
 10 pages, comments and references added