Year: 2012
Type: article
Abstract: We study the thermalization process in the self-interacting curvaton preheating scenario. We solve the evolution of the system with classical lattice simulations with a recently released symplectic PyCOOL program during the resonance and the early thermalization periods and compare the results to the inflaton preheating. After this, we calculate the generated non-Gaussianity with the $\ensuremath{\Delta}N$ formalism and the separate universe approximation by running a large number of simulations with slightly different initial values. The results indicate a high level of non-Gaussianity. We also use this paper to showcase the various postprocessing functions included with the PyCOOL program that is available from https://github.com/jtksai/PyCOOL.
Author: J. Sainio
Institution: University of Turku
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1991357524