期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 7, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2022/07/015
关键词
string theory and cosmology; supersymmetry and cosmology; cosmic singularity; alternatives to inflation
资金
- MINECO [PID2019-105614GB-C21]
This article presents a cosmological model that incorporates gravity coupled with three interacting scalar fields. The dynamical system of these scalar fields exhibits strange attractors similar to the classic Lorenz attractor, leading to chaotic behavior in cosmology.
We study a cosmological model of gravity coupled to three, self-interacting scalar fields, one of them with negative kinetic term. The theory has cosmological solutions described by three-dimensional quadratic autonomous equations. Remarkably, the dynamical system has strange attractors, which are in fact very similar to the classic Lorenz attractor. The associated chaotic cosmologies exhibit highly fluctuating periods of contraction and expansion, alternating with long, steady periods in a de Sitter-like phase.
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