4 research outputs found
Accidental Inflation in the Landscape
We study some aspects of fine tuning in inflationary scenarios within string
theory flux compactifications and, in particular, in models of accidental
inflation. We investigate the possibility that the apparent fine-tuning of the
low energy parameters of the theory needed to have inflation can be generically
obtained by scanning the values of the fluxes over the landscape. Furthermore,
we find that the existence of a landscape of eternal inflation in this model
provides us with a natural theory of initial conditions for the inflationary
period in our vacuum. We demonstrate how these two effects work in a small
corner of the landscape associated with the complex structure of the Calabi-Yau
manifold P^4_[1,1,1,6,9] by numerically investigating the flux vacua of a
reduced moduli space. This allows us to obtain the distribution of observable
parameters for inflation in this mini-landscape directly from the fluxes.Comment: 40 pages, 11 figure