Abstract:
In effective supergravity theories following from the superstring, a modulus field can quite naturally set the neccessary initial conditions for successful cosmological inflation to be driven by a hidden sector scalar field. The leading term in the scalar potential is {\em cubic} hence the spectrum of scalar density perturbations neccessarily deviates from scale-invariance, while the generation of gravitational waves is negligible. The growth of large-scale structure is then consistent with observational data assuming a critical density cold dark matter universe, with no need for a component of hot dark matter. The model can be tested thorough measurements of cosmic microwave background anisotropy on small angular scales.
  • talk: Calcutta 1996/01/02
  • talk: Seoul 1996/06/04
  • inflation
  • supersymmetry
  • potential
  • field theory: scalar
  • density: perturbation
  • spectrum: perturbation
  • astrophysics: missing-mass
  • background