Non-chaotic dynamics in general-relativistic and scalar-tensor cosmology
V. Faraoni, M.N. Jensen, S.A. Theuerkauf (Bishop's University)
TL;DR
This paper demonstrates that the dynamics of vacuum scalar-tensor cosmology are non-chaotic, using a conformal transformation to analyze the system without fixing the coupling or potential.
Contribution
It provides a general proof that scalar-tensor cosmology dynamics are non-chaotic, resolving a debated issue in the field.
Findings
Dynamics are non-chaotic in scalar-tensor cosmology.
Conformal transformation to Einstein frame simplifies analysis.
Results are valid for generic potentials.
Abstract
In the context of scalar-tensor models of dark energy and inflation, the dynamics of vacuum scalar-tensor cosmology are analysed without specifying the coupling function or the scalar field potential. A conformal transformation to the Einstein frame is used and the dynamics of general relativity with a minimally coupled scalar field are derived for a generic potential. It is shown that the dynamics are non-chaotic, thus settling an existing debate.
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