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We study inflation induced by (power-low) scalar curvature corrections to General Relativity.
- The class of inflationary scalar potentials $V(\sigma)\sim\exp[n\,\sigma]$, $n$ general parameter, is investigated in the Einsein frame and the corresponding actions in the Jordan frame are derived.
- We found the conditions for which these potentials are able to reproduce viable inflation according with the last cosmological data and lead to large scalar curvature corrections which emerge only at a mass scale larger than the Planck mass.
- Cosmological constant may appear or be set equal to zero in the Jordan frame action without changing the behaviour of the model during inflation.
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