On the exact quartic effective action for the type IIB superstring
High Energy Physics - Theory
2008-11-26 v2
Abstract
We propose a four-point effective action for the graviton, antisymmetric two-forms, dilaton and axion of type IIB superstring in ten dimensions. It is explicitly SL(2,Z)-invariant and reproduces the known tree-level results. Perturbatively, it has only one-loop corrections for the NS-NS sector, generalizing the non-renormalization theorem of the R^4 term. Finally, the non-perturbative corrections are of the expected form, namely, they can be interpreted as arising from single D-instantons of multiple charge.
Cite
@article{arxiv.hep-th/9710023,
title = {On the exact quartic effective action for the type IIB superstring},
author = {A. Kehagias and H. Partouche},
journal= {arXiv preprint arXiv:hep-th/9710023},
year = {2008}
}
Comments
14 pages, latex. minor corrections, version to appear in Phys.Lett.B