Are $R^2$- and Higgs-inflations really unlike? [CEA]

We address the question of unlikeness of R^2- and Higgs inflations exhibiting exponentially flat potentials and hence apparently violating the inherit in a chaotic inflation initial condition when kinetic, gradient and potential terms are all of order one in Planck units. Placing the initial conditions in the Jourdan frame we found both models not worse than any other models with unbounded from above potentials.

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D. Gorbunov and A. Panin
Thu, 11 Dec 14

Comments: 6 pages