Phantoms and strange attractors in cosmology
arXiv:2204.06018 · doi:10.1088/1475-7516/2022/07/015
Abstract
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, leading to strange attractors. The associated chaotic cosmologies exhibit highly fluctuating periods of contraction and expansion, alternating with long, steady periods in a de Sitter-like phase.
12 pages, 6 figures