1.9k citations · 3k across the 24 of their papers we have counts for
5 papers · 1 filter
Backreaction and Stochastic Effects in Single Field Inflation
Laurence Perreault Levasseur, Evan McDonough
The formalism of stochastic inflation is a powerful tool for analyzing the backreaction of cosmological perturbations, and making precise predictions for inflationary observables.…
Recursive Stochastic Effects in Valley Hybrid Inflation
Laurence Perreault Levasseur, Vincent Vennin, Robert Brandenberger
Hybrid Inflation is a two-field model where inflation ends by a tachyonic instability, the duration of which is determined by stochastic effects and has important observational imp…
Lagrangian Formulation of Stochastic Inflation: A Recursive Approach
Laurence Perreault Levasseur
We present a new, recursive approach to stochastic inflation which is self-consistent and solves multiple problems which plagued a certain number of previous studies, in particular…
A Matter Bounce By Means of Ghost Condensation
Chunshan Lin, Robert H. Brandenberger, Laurence Perreault Levasseur
Assuming the existence of a scalar field which undergoes "ghost condensation" and which has a suitably chosen potential, it is possible to obtain a non-singular bouncing cosmology…
Analytical Study of Mode Coupling in Hybrid Inflation
Laurence Perreault Levasseur, Guillaume Laporte, Robert Brandenberger
We provide an analytical study of the coupling of short and long wavelength fluctuation modes during the initial phase of reheating in two field models like hybrid inflation. In th…