title: Fluxes, Hierarchies, and Metastable Vacua in Supersymmetric Field Theories
creator: Brümmer, Felix
subject: ddc-530
subject: 530 Physics
description: This thesis concerns topics both in low-energy effective field theories from type IIB superstring flux compactifications and in fourdimensional, rigidly supersymmetric gauge theories. We introduce flux compactifications with so-called “warped throat” regions, which lead to large hierarchies of scales in the effective four-dimensional theory. The correspondence between a particular such throat and a five-dimensional Randall-Sundrum-like model is established. We shown how certain string-theoretic features of the compactification, such as moduli stabilization by fluxes or the presence of an unstabilized Kähler modulus, are incorporated in the five-dimensional picture. The KKLT construction for metastable de Sitter vacua is reviewed, as well as some possible modifications involving spontaneous F-term supersymmetry breaking. For KKLT-like models with their hidden sector localized inside a throat, the mediation of supersymmetry breaking to the visible sector is investigated. We review the mechanism of mixed modulus-anomaly mediation, and show that there can be additional equally important gravity-mediated contributions. We finally turn to the ISS model of metastable dynamical supersymmetry breaking in four dimensions, and present a renormalizable extension which generates a large hierarchy naturally. We also recapitulate how the ISS model may be obtained from a type IIB superstring model.
date: 2007
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/8122/1/diss.pdf
identifier: DOI:10.11588/heidok.00008122
identifier: urn:nbn:de:bsz:16-opus-81229
identifier:   Brümmer, Felix  (2007) Fluxes, Hierarchies, and Metastable Vacua in Supersymmetric Field Theories.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/8122/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: ger