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Sequestering in String Compactifications
Stockholm University. (Physics)ORCID-id: 0000-0001-9611-2450
Cornell University.
Cornell University.
Cornell University.
2011 (Engelska)Ingår i: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, Vol. 134Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

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 scenarios, 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.

Ort, förlag, år, upplaga, sidor
2011. Vol. 134
Nyckelord [en]
Flux compactifications; Supersymmetry Breaking
Nationell ämneskategori
Astronomi, astrofysik och kosmologi
Forskningsämne
Fysik
Identifikatorer
URN: urn:nbn:se:kau:diva-30895DOI: 10.1007/JHEP06(2011)134ISI: 000293136600061OAI: oai:DiVA.org:kau-30895DiVA, id: diva2:688125
Tillgänglig från: 2014-01-15 Skapad: 2014-01-15 Senast uppdaterad: 2019-07-11Bibliografiskt granskad

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