Potential reconstruction from general power spectrum in single-field
  inflation
  We suggest a new method to reconstruct, within canonical single-field
inflation, the inflaton potential directly from the primordial power spectrum
which may deviate significantly from near scale-invariance. Our approach relies
on a more generalized slow-roll approximation than the standard one, and can
probe the properties of the inflaton potential reliably. We give a few examples
for reconstructing potential and discuss the validity of our method.
