I will describe the possible impact of non-minimal SUSY models, beyond the MSSM, on Cosmological issues relating to Dark Matter, Leptogenesis and Inflation. In particular I will discuss the LSP neutralino WIMP candidate in the USSM, the contribution of the new particles in the E6SSM to flavour dependent lepton asymmetries, and no-scale sneutrino hybrid inflation.
References:
Cold dark matter candidate in a class of supersymmetric models with an
extra U(1),
B.de Carlos and J.R.Espinosa,
arXiv:hep-ph/9705315
Leptogenesis in the Exceptional Supersymmetric Standard Model: flavour
dependent lepton asymmetries,
S.F.King, R.Luo, D.J.Miller and R.Nevrozov,
arXiv:0806.0330
Solving the eta-problem in Hybrid Inflation with Heisenberg Symmetry
and Stabilized Modulus,
S.Antusch, M.Bastero-Gil, K.Dutta, S.F.King, P.M.Kostka,
aXiv:0808.2425