Sharp Predictions from Eternal Inflation Patches in D-brane Inflation
  We numerically generate the six-dimensional landscape of D3-brane inflation
and identify patches of eternal inflation near sufficiently flat inflection
points of the potential. We show that reasonable measures that select patches
of eternal inflation in the landscape yield sharp predictions for the spectral
properties of primordial perturbations on observable scales. These include a
scalar tilt of .936, a running of the scalar tilt -.00103, undetectably small
tensors and non-Gaussianity, and no observable spatial curvature. Our results
explicitly demonstrate that precision cosmology probes the combination of the
statistical properties of the string landscape and the measure implied by the
universe's quantum state.
