2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42196Leptogenesis in supersymmetric model is discussed comprehensively and in detail. In the first half, we discuss several leptogenesis mechanisms by the decay of heavy right-handed neutrino, which include the standard thermal leptogenesis, leptogenesis via inflaton decay, and leptogenesis from the coherent oscillation of the right-handed sneutrino. In the second half, we perform a detailed analysis on the leptogenesis via the LHu flat direction (Affleck-Dine leptogenesis).Ph.D Thesis submitted to Department of Physics, University of Tokyo (January 2002), 148 pagesHigh Energy Physics - Phenomenologytext