Cosmological models based on an asymmetric scalar doublet with kinetic coupling of components. II. Numerical modeling
Abstract
Numerical modeling of a mathematical model of the cosmological evolution of an asymmetric scalar doublet with kinetic interaction between the components was carried out. A wide range of values of fundamental parameters and initial conditions of the model are considered. Various types of behavior have been identified: models with an infinite inflationary past and future - with and without a rebound point, models with a finite past and infinite future, with an infinite past and finite future (Big Rip), as well as models with a finite past and future. Based on numerical analysis, the behavior of models near the initial singularity and the Big Rip is studied; it is shown that in both cases the barotropic coefficient tends to unity, which corresponds to an extremely rigid state of matter near singularities. A numerical example of the cosmological generation of the classical component of a scalar doublet by its phantom component is given. An assessment was made of the creation of the velocity of fermion pairs by a scalar field near the rebound points and it was shown that a scalar field at the cold stage of the Universe can ensure the creation of the required number of massive scalarly charged fermions. Keywords: cosmological model, phantom and classical scalar fields, quality analysis, asymptotic behavior, numerical modelling, scalar field generation, types of behavior.
- Publication:
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arXiv e-prints
- Pub Date:
- June 2024
- DOI:
- 10.48550/arXiv.2406.00742
- arXiv:
- arXiv:2406.00742
- Bibcode:
- 2024arXiv240600742I
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- 15 pages, 28 figures, 11 references