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Institute for the Physics and Mathematics of the UniverseWPI

IPMU Seminar

Date: September 22, 2008, 13:30 - 14:30
Place: Seminar Room at IPMU Prefab. B, Kashiwa Campus of the University of Tokyo
Speaker: Antonio Enea Romano (YITP)
Title: Effects of particle production during inflation [PDF]
Abstract: The impact of particle production during inflation on the primordial curvature perturbation spectrum is investigated both analytically and numerically.
We obtain an oscillatory behavior on small scales, while on large scales the spectrum is unaffected.
The oscillations are due to a fast change of the second derivative of the inflaton, which can appear in other inflationary models which present temporary violations of the slow-roll conditions, where a similar effect on the power spectrum should be produced.