Phenomenological investigation of a quantum gravity extension of
  inflation with the Starobinsky potential
  We investigate the pre-inflationary dynamics of inflation with the
Starobinsky potential, favored by recent data from the Planck mission, using
techniques developed to study cosmological perturbations on quantum spacetimes
in the framework of loop quantum cosmology. We find that for a large part of
the initial data, inflation compatible with observations occurs. There exists a
subset of this initial data that leads to quantum gravity signatures that are
potentially observable. Interestingly, despite the different inflationary
dynamics, these quantum gravity corrections to the powerspectra are similar to
those obtained for inflation with a quadratic potential, including suppression
of power at large scales. Furthermore, for super horizon modes the tensor modes
show deviations from the standard inflationary paradigm that are unique to the
Starobinsky potential and could be important for non-Gaussian modulation and
tensor fossils.
