Baryogenesis from flat directions of the supersymmetric standard model

摘要: Abstract Baryogenesis from the coherent production of a scalar condensate along flat direction supersymmetric extension standard model (Aflleck-Dine mechanism) is investigated. Two important effects are emphasized. First, non-renormalizable terms in superpotential can lift directions at large field values. Second, finite energy density early universe induces soft potentials with curvature order Hubble constant. Both these have implications for baryogenesis, which requires squark or slepton expectation values to develop directions. In particular, induced mass squared must be negative. The resulting baryon entropy ratio very insensitive details couplings and initial conditions, but depends on dimension operator stabilizes reheat temperature after inflation. Unlike original scenario, an acceptable asymmetry result without subsequent releases. simplest scenario generated LH u direction, related lightest neutrino.