A Higher Form (of) Mediation

Abstract

We exhibit a simple and robust mechanism for mediation of supersymmetry breaking between geometrically separated D-branes in type II string theory. The mediation proceeds via RR p-forms that couple via linear Chern-Simons terms to the abelian vector bosons on the branes. From a 4-d low energy perspective, the mechanism reduces to U(1) mediation.

Figures (4)

• Figure 1: In our set-up, the MSSM and the SUSY breaking hidden sector each live on collections of branes localized within separate small regions of the Calabi-Yau manifold.
• Figure 2: SUSY breaking on the hidden brane gets mediated to the visible sector via an RR p-form. It manifests itself via a mass-splitting between the abelian vector boson ${\mathcal{A}}_1$ and its superpartner.
• Figure 3: A typical localized IIB brane configuration consists of bound state combinations of D3, D5 and D7-branes wrapping 0-, 2- and 4-cycles, supported in a local region of the Calabi-Yau geometry. The local region may lie at the tip of a warped throat.
• Figure 4: A schematic depiction of our topological set-up. The visible and hidden D-branes wrap homologous cycles ${\mathsf A}_{\rm V}$ and ${\mathsf A}_{\rm H}$ within the CY manifold, that share a common dual cycle ${\mathsf B}$.