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We investigate the pre-inflationary dynamics of inflation with theStarobinsky potential, favored by recent data from the Planck mission, usingtechniques developed to study cosmological perturbations on quantum spacetimesin the framework of loop quantum cosmology. We find that for a large part ofthe initial data, inflation compatible with observations occurs. There exists asubset of this initial data that leads to quantum gravity signatures that arepotentially observable. Interestingly, despite the different inflationarydynamics, these quantum gravity corrections to the powerspectra are similar tothose obtained for inflation with a quadratic potential, including suppressionof power at large scales. Furthermore, for super horizon modes the tensor modesshow deviations from the standard inflationary paradigm that are unique to theStarobinsky potential and could be important for non-Gaussian modulation andtensor fossils.

Phenomenological investigation of a quantum gravity extension of inflation with the Starobinsky potential