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hep-ph2008★ 10 cited
Realistic Hybrid Inflation in 5D Orbifold SO(10) GUT
Takeshi Fukuyama, Nobuchika Okada, Toshiyuki Osaka
We discuss the smooth hybrid inflation scenario in the context of a simple supersymmetric SO(10) GUT in 5D orbifold. In this GUT model, the SO(10) gauge symmetry is broken down to…
hep-ph2005
Non-thermal Leptogenesis and a Prediction of Inflaton Mass in a Supersymmetric SO(10) Model
Takeshi Fukuyama, Tatsuru Kikuchi, Toshiyuki Osaka
The gravitino problem gives a severe constraint on the thermal leptogenesis scenario. This problem leads us to consider some alternatives to it if we try to keep the gravitino mass…