Sequestering in String Compactifications

Abstract

We study the mediation of supersymmetry breaking in string compactifications whose moduli are stabilized by nonperturbative effects. We begin with a critical review of arguments for sequestering in supergravity and in string theory. We then show that geometric isolation, even in a highly warped space, is insufficient to achieve sequestering: in type IIB compactifications, nonperturbative superpotentials involving the Kahler moduli introduce cross-couplings between well-separated visible and hidden sectors. The scale of the resulting soft terms depends on the moduli stabilization scenario. In the Large Volume Scenario, nonperturbative superpotential contributions to the soft trilinear $A$ terms can introduce significant flavor violation, while in KKLT compactifications their effects are negligible. In both cases, the contributions to the $\mu$ and $B\mu$ parameters cannot be ignored in general. We conclude that sequestered supersymmetry breaking is possible in nonperturbatively-stabilized compactifications only if a mechanism in addition to bulk locality suppresses superpotential cross-couplings.

47 pages

References in corpus (10)

• Gaugino Condensates and D-terms from D7-branes
• SUSY Breaking in Local String/F-Theory Models
• Moduli Stabilisation versus Chirality for MSSM like Type IIB Orientifolds
• Holographic Systematics of D-brane Inflation
• Sequestering in String Theory
• Stabilizing All Kahler Moduli in Type IIB Orientifolds
• D3-brane Vacua in Stabilized Compactifications
• Mirror Mediation
• Sparticle Spectrum of Large Volume Compactification
• Flavor and CP conserving moduli mediated SUSY breaking in flux compactification

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• Soft branes in supersymmetry-breaking backgrounds
• Curvature corrections to KPV: Do we need deep throats?
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• A Toolkit for Perturbing Flux Compactifications
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• Dark energy with the help of interacting dark sectors
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