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arXiv · 1903.07487

The primordial curvature perturbation from lattice simulations

Shailee V. Imrith·David J. Mulryne·Arttu Rajantie
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Abstract

We study the contribution to the primordial curvature perturbation on observational scales generated by the reheating field in massless preheating. To do so we use lattice simulations and a recent extension to the $δN$ formalism. The work demonstrates the functionality of these techniques for calculating the observational signatures of models in which non-perturbative reheating involves a light scalar field.

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Shailee V. Imrith, David J. Mulryne, Arttu Rajantie. 2019-03-18. The primordial curvature perturbation from lattice simulations. https://doi.org/10.1103/physrevd.100.043543

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