A plausible upper limit on the number of e-foldings

Abstract

Based solely on the arguments relating Friedmann equation and the Cardy formula we derive a bound for the number of e-folds during inflation for a standard Friedmann-Robertson-Walker as well as non-standard four dimensional cosmology induced by a Randall-Sundrum-type model.

4 pages. Version appearing in the Physical Review D

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• The Holographic dark energy reexamined
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• Holography and Eternal Inflation
• Dark energy, inflation and the cosmic coincidence problem
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• Sneutrino brane inflation and leptogenesis
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