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Please use this identifier to cite or link to this item: http://hdl.handle.net/2108/954

Title: Magnetic fluxes and moduli stabilization in Type I superstrings
Authors: Bianchi, Massimo
Trevigne, Elisa
Issue Date: 30-Jul-2009
Abstract: In this work we have discussed the effect of turning on constant electromagnetic fields on some direction of the compact manifold in type I models. From the beginning this subject has received much attention in the String comunity for both theoretical and phenomenological reasons. It suggested a new way of supersymmetry breaking, a notorius problem in String Theory, even in toroidal compactifications. This is a consequence of the different coupling of particles of different helicities to magnetic fields. The breaking occurs at string scale, which can be fixed at TeV scale in D-branes models avoiding the hierarchy problem. Over the last years, many efforts were addressed in the construction of String Theory vacua using internal \parallel" magnetic uxes on \factorizable" tori Td = T2  :::T2 or, in the T-dual framework, with branes intersecting at angle. The results presented here should have clarified several features of the dynamics of open strings coupled to \oblique" ma...
Description: 19. ciclo
URI: http://hdl.handle.net/2108/954
Appears in Collections:Tesi di dottorato in scienze matematiche e fisiche

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