PREPRINT
81BDF726-F5B4-411B-92F0-A313A1454730

Stretching the Inflaton Potential with Kinetic Energy

James E. Lidsey
arXiv:hep-th/0703007

Submitted on 1 March 2007

Abstract

Inflation near a maximum of the potential is studied when non-local derivative operators are included in the inflaton Lagrangian. Such terms can impose additional sources of friction on the field. For an arbitrary spacetime geometry, these effects can be quantified in terms of a local field theory with a potential whose curvature around the turning point is strongly suppressed. This implies that a prolonged phase of slow-roll inflation can be achieved with potentials that are otherwise too steep to drive quasi-exponential expansion. We illustrate this mechanism within the context of p-adic string theory.

Preprint

Comment: 4 pages

Subjects: High Energy Physics - Theory; Astrophysics; General Relativity and Quantum Cosmology

URL: https://arxiv.org/abs/hep-th/0703007