MSSM flat direction inflation : slow roll, stability, fine tuning and reheating.

摘要: We consider low scale slow roll inflation driven by the gauge-invariant flat directions udd and LLe of minimally supersymmetric standard model at vicinity a saddle point scalar potential. study stability regime considering radiative supergravity corrections. The latter are found to be harmless, but former require modest fine-tuning condition. show that, while inflaton decays almost instantly, full thermalization occurs late, typically temperature T≈107 GeV, so that there is no gravitino problem. also compute renormalization group running mass relate it slepton masses may within reach LHC could precisely determined in future linear collider experiment.