Brane–antibrane kinetic mixing, millicharged particles and SUSY breaking

2003/11/18 by Steven Abel, Ben Schofield, Ben W Schofield · 11 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #hep-ph #hep-th

paper · pdf · doi:10.1016/j.nuclphysb.2004.02.037

published as Nucl.Phys. B685 (2004) 150-170 · 20 pages, 8 figures (references added)

arxiv created 2003/11/18 · openalex publication_date 2004/03/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It is known that hidden U(1) gauge factors can couple to visible U(1)'s through Kinetic Mixing. This phenomenon is shown generically to occur in nonsupersymmetric string set-ups, between branes and antibranes. Kinetic Mixing acts either to give millicharges (of e.g. hypercharge) to would-be hidden sector fermions, or to generate an enhanced communication of supersymmetry breaking that dominates over the usual gravitational suppression. In either case, the conclusion is that the string scale in nonsupersymmetric brane configurations has a generic upper bound of M_s <~ 10⁸ GeV.

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