Four-Derivative Brane Couplings from String Amplitudes
High Energy Physics - Theory
2015-05-30 v1
Abstract
We evaluate the string theory disc amplitude of one Ramond-Ramond field C^(p-3) and two Neveu-Schwarz B-fields in the presence of a single Dp-brane in type II string theory. From this amplitude we extract the four-derivative (or equivalently order (alpha')^2) part of the Dp-brane action involving these fields. We show that the new couplings are invariant under R-R and NS-NS gauge transformations and compatible with linear T-duality.
Keywords
Cite
@article{arxiv.1110.3831,
title = {Four-Derivative Brane Couplings from String Amplitudes},
author = {Katrin Becker and Guangyu Guo and Daniel Robbins},
journal= {arXiv preprint arXiv:1110.3831},
year = {2015}
}
Comments
31 pages, 7 figures