Non-Gaussian Spikes from Chaotic Billiards in Inflation Preheating

J. Richard Bond, Andrei V. Frolov, Zhiqi Huang +1

A new class of non-Gaussian curvature fluctuations ζ_{pr} (\bx) \equiv δN(χ_i) arises from the post-inflation preheating behaviour of a non-inflaton field χ_i. Its billiard-like ch…