2004/04/19 by D. Lust, Dieter Lüst, Peter Mayr +4 · 1 voice · 14 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2004.06.052
published as Nucl.Phys.B696:205-250,2004 · 51 pages, harvmac
arxiv published 2004/04/19 · arxiv created 2004/05/14 · arxiv updated 2004/05/14 · openalex publication_date 2004/07/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We calculate various tree-level (disk) scattering amplitudes involving gauge, matter and moduli fields in type IIB toroidal orbifold/orientifold backgrounds with D9,D5 respectively D7,D3-branes or via T-duality D6-branes in type IIA compactifications. In type IIB the D-branes may have non-vanishing fluxes on their world-volume. From these results we extract the moduli and flux dependence of the tree-level gauge couplings, the metrics for the moduli and matter fields. The non-vanishing fluxes correspond in the T-dual type IIA description to intersecting D6-branes. This allows us to determine the moduli dependence of the tree-level matter field metrics in the effective action of intersecting D6-brane models. In addition we derive the physical Yukawa couplings with their correct normalization.