Inflation from a ripple on a vanishing potential

Physics

Scientific paper

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Scientific paper

We propose a very simple model of inflation having essentially one free parameter, the value of which is fixed by the amplitude and scale independence of energy density fluctuations. The model, based on the maximally symmetric supergravity with SU(n,1) manifold, has an asymptotically flat inflaton potential. All inflationary conditions can be satisfied without any fine-tuning and all mass parameters can be O(MPI).
Present address: Department of Theoretical Physics, University of Michigan, Ann Arbor, MI 48109, USA.

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