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arXiv · 1511.04971

On RR Couplings and Bulk Singularity Structures of Non-BPS Branes

Ehsan Hatefi
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Abstract

We compute the five point world sheet scattering amplitude of a symmetric closed string Ramond-Ramond , a transverse scalar field, a world volume gauge field and a real tachyon in both world volume and transverse directions of brane in type IIA and IIB superstring theory. We provide the complete analysis of $ $ S-matrix and show that both $u'=u+\frac{1}{4}$ and $t$ channel bulk singularity structures can also be examined by this S-matrix. Various remarks about new restricted Bianchi identities on world volume for the other pictures have also been made.

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Ehsan Hatefi. 2016-07-14. On RR Couplings and Bulk Singularity Structures of Non-BPS Branes. https://doi.org/10.1016/j.physletb.2016.07.038

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