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String Theory and Particle Physics by Angel M. Uranga, Luis E. Ibáñez

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15

Moduli stabilization and supersymmetry breaking in string theory

We continue the study of moduli stabilization, now focusing on its interplay with SUSY breaking in string compactifications. We describe different mechanisms proposed for heterotic and type II orientifold compactifications, and elaborate on type IIB models, which allow for very explicit computations. Fluxes not only help in fixing moduli but generically induce SUSY breaking soft terms in the effective action. Some scenarios of SUSY breaking in string construction boil down to SUSY breaking in the dilaton or geometric moduli sector, and can be described in the 4d effective supergravity action in a quite model independent formalism. This setup allows the computation of soft terms ...

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