338 citations · 1.2k across the 14 of their papers we have counts for
3 papers · 1 filter
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…
Non-Gaussianity as a Probe of the Physics of the Primordial Universe and the Astrophysics of the Low Redshift Universe
E. Komatsu, N. Afshordi, N. Bartolo +58
A new and powerful probe of the origin and evolution of structures in the Universe has emerged and been actively developed over the last decade. In the coming decade, non-Gaussiani…
Cosmological Fluctuations from Infra-Red Cascading During Inflation
Neil Barnaby, Zhiqi Huang, Lev Kofman +1
We propose a qualitatively new mechanism for generating cosmological fluctuations from inflation. The non-equilibrium excitation of interacting scalar fields often evolves into inf…