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A Toy Model For Single Field Open Inflation

Inflation in an open universe produced by Coleman-De Luccia (CDL) tunneling induces a friction term that is strong enough to allow for successful small-field inflation in models that would otherwise suffer from a severe overshoot problem. In this paper, we present a polynomial scalar potential which allows for a full analysis. This provides a simple model of single-field open inflation on a small-field inflection point after tunneling. We present numerical results and compare them with analytic approximations.

preprint2012arXivOpen access
Pascal M. VaudrevangeAlexander Westphal
astro-ph.COgr-qchep-th
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Pascal M. VaudrevangeAlexander Westphal

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