TY  - GEN
TI  - Fluxes, Hierarchies, and Metastable Vacua in Supersymmetric Field Theories
A1  - Brümmer, Felix
N2  - 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.
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/8122/
KW  - Flusskompaktifizierung 
KW  -  SupergravitationFlux compactification 
KW  -  Supergravity
Y1  - 2007///
ID  - heidok8122
AV  - public
ER  -