100 citations · 199 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2009★ 41 cited
Non-Gaussianity from resonant curvaton decay
Alex Chambers, Sami Nurmi, Arttu Rajantie
We calculate curvature perturbations in the scenario in which the curvaton field decays into another scalar field via parametric resonance. As a result of a nonlinear stage at the…
astro-ph2008★ 58 cited
Non-Gaussianity from massless preheating
Alex Chambers, Arttu Rajantie
Preheating can convert superhorizon fluctuations of light scalar fields present at the end of inflation into observable density perturbations. We show in detail how lattice field t…
astro-ph2007★ 100 cited
Lattice calculation of non-Gaussianity from preheating
Alex Chambers, Arttu Rajantie
If light scalar fields are present at the end of inflation, their non-equilibrium dynamics such as parametric resonance or a phase transition can produce non-Gaussian density pertu…