English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

A detailed comparative qualitative analysis and numerical simulation ofevolution of the cosmological models based on the doublet of classical andphantom scalar fields with self-action. The 2-dimensional and 3-dimensionalprojections of the phase portraits of the corresponding dynamic system arebuilt. Just as in the case of single scalar fields, the phase space of suchsystems, becomes multiply connected, the ranges of negative total effectiveenergy unavailable for motion, getting appear there. The distinctive feature ofthe asymmetrical scalar doublet is the time dependency of the prohibitedranges' projections on the phase subspaces of each field as a result of whichthe existence of the limit cycles with null effective energy depends on theparameters of the field model and initial conditions. The numerical modelswhere the dynamic system has limit cycles on hypersurfaces of null energy, arebuilt. It is shown, that even quite weak phantom field in such model undertakesfunctions of management of the dynamic system and can significantly change thecourse of the cosmological evolution.

The Peculiarities of the Cosmological Models Based on Nonlinear  Classical and Phantom Fields with Minimal Interaction. II. The Cosmological  Model Based on the Asymmetrical Scalar Doublet