Peculiarities of Cosmological Models Based on a Nonlinear Asymmetric Scalar Doublet with Minimal Interaction. I. Qualitative Analysis
- Authors: Ignat’ev Y.G.1, Kokh I.A.1
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Affiliations:
- Kazan Federal University
- Issue: Vol 25, No 1 (2019)
- Pages: 24-36
- Section: Article
- URL: https://journals.rcsi.science/0202-2893/article/view/176262
- DOI: https://doi.org/10.1134/S0202289319010055
- ID: 176262
Cite item
Abstract
A detailed comparative qualitative analysis is carried out for of the evolution of cosmological models based on a doublet of classical and phantom scalar fields with self-action. Just as in the case of a single scalar field, the phase space of such systems becomes multiply connected, there appear ranges of negative total effective energy unavailable for motion. A distinctive feature of the asymmetrical scalar doublet is the time dependence of prohibited ranges’ projections on the phase subspaces of each field.
About the authors
Yu. G. Ignat’ev
Kazan Federal University
Author for correspondence.
Email: ignatev_yu@rambler.ru
Russian Federation, Kremlyovskaya ul. 18, Kazan, 420008
I. A. Kokh
Kazan Federal University
Email: ignatev_yu@rambler.ru
Russian Federation, Kremlyovskaya ul. 18, Kazan, 420008