Graviton-Scalar Interaction in the PP-Wave Background
High Energy Physics - Theory
2014-11-18 v3
Abstract
We compute the graviton two scalar off-shell interaction vertex at tree level in Type IIB superstring theory on the pp-wave background using the light-cone string field theory formalism. We then show that the tree level vertex vanishes when all particles are on-shell and conservation of p_{+} and p_{-} are imposed. We reinforce our claim by calculating the same vertex starting from the corresponding SUGRA action expanded around the pp-wave background in the light-cone gauge.
Cite
@article{arxiv.hep-th/0303007,
title = {Graviton-Scalar Interaction in the PP-Wave Background},
author = {K. Bobkov},
journal= {arXiv preprint arXiv:hep-th/0303007},
year = {2014}
}
Comments
26 pages, harvmac One reference added. A few comments changed in the introduction. The "cyclic perms." term removed from some equations as unnecessary and equations (2.38) and (3.19) are corrected accordingly