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Paper detail

Preheating with Non-Standard Kinetic Term

We consider reheating after inflation in theories with a non-standard kinetic term. We show that the equation that exhibits parametric resonance is the Hill-Whittaker equation, which is a particular case of the more general Hill equation. This equation is in general more unstable than the Mathieu equation, such that narrow resonance preheating may be efficient in theories with a non-canonical kinetic term.

preprint2009arXivOpen access
Jean LachapelleRobert H. Brandenberger
astro-phhep-phgr-qchep-th
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Jean LachapelleRobert H. Brandenberger

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