A Comparison of Supersymmetry Breaking and Mediation Mechanisms
arXiv:1006.0949 · doi:10.1007/JHEP10(2010)077
Abstract
We give a unified treatment of different models of supersymmetry breaking and mediation from a four dimensional effective field theory standpoint. In particular a comparison between GMSB and various gravity mediated versions of SUSY breaking shows that, once the former is embedded within a SUGRA framework, there is no particular advantage to that mechanism from the point of view of FCNC suppression. We point out the difficulties of all these scenarios - in particular the cosmological modulus problem. We end with a discussion of possible string theory realizations.
Added clarifications and references, 20 pages