@Article{Figueroa_etal2023,
author="Figueroa, D. G.
and Florio, A.
and Opferkuch, T.
and Stefanek, B.",
title="Lattice simulations of non-minimally coupled scalar fields in the Jordan frame",
journal="Scipost Physics",
year="2023",
publisher="Scipost Foundation",
volume="15",
number="3",
pages="077--28pp",
abstract="The presence of scalar fields with non-minimal gravitational interactions of the form {\&} xi;|{\&} phi;|2R may have important implications for the physics of the early universe. We propose a procedure to solve the dynamics of non-minimally coupled scalar fields directly in the Jordan frame, where the non-minimal couplings are maintained explicitly. Our algorithm can be applied to lattice simulations that include minimally coupled fields and an arbitrary number of non-minimally coupled scalars, with the expansion of the universe sourced by all fields present. This includes situations when the dynamics become fully inhomogeneous, fully non-linear (due to e.g. backreaction or mode rescattering effects), and/or when the expansion of the universe is dominated by non-minimally coupled species. As an example, we study geometric preheating with a non-minimally coupled scalar spectator field when the inflaton oscillates following the end of inflation.",
optnote="WOS:001065573600001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5670), last updated on Thu, 28 Sep 2023 08:08:59 +0000",
issn="2542-4653",
doi="10.21468/SciPostPhys.15.3.077",
opturl="https://arxiv.org/abs/2112.08388",
opturl="https://doi.org/10.21468/SciPostPhys.15.3.077",
language="English"
}