Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Ignat'ev, Yurii"'
A detailed comparative qualitative analysis and numerical simulation of evolution of the cosmological models based on the doublet of classical and phantom scalar fields with self-action. The 2-dimensional and 3-dimensional projections of the phase po
Externí odkaz:
http://arxiv.org/abs/1810.09873
Autor:
Ignat'ev, Yurii, Samigullina, A. R.
With the help of an applied software package written by the authors, we have averaged the effective total barotropic coefficient $\kappa=(-\lambda + p)/(\lambda+\epsilon$) of the classical scalar field and the cosmological term and have shown that du
Externí odkaz:
http://arxiv.org/abs/1808.05972
A detailed comparative qualitative analysis and numerical simulation of evolution of the cosmological models based on classical and phantom scalar fields with self-action was performed. The phase portraits of the dynamic systems of classical and phan
Externí odkaz:
http://arxiv.org/abs/1808.04570
Autor:
Ignat'ev, Yurii
On the basis of qualitative analysis of the system of differential equations of the standard cosmological model it is shown that in the case of zero cosmological constant this system has a stable center corresponding to zero values of potential and i
Externí odkaz:
http://arxiv.org/abs/1609.08851
Autor:
Ignat'ev, Yurii
On the basis of qualitative theory of differential equations it is shown that dynamic system based on the system of Einstein - Klein - Gordon equations with regard to Friedman Universe has a stable center corresponding to zero values of scalar potent
Externí odkaz:
http://arxiv.org/abs/1609.00745
The article represents a research of the cosmological evolution of fermion statistical systems with fantom scalar interaction where "kinetic" term's contribution to the total energy of a scalar field is negative. As a result of analytical and numeric
Externí odkaz:
http://arxiv.org/abs/1608.05020
Autor:
Ignat'ev, Yurii
Through averaging the Einstein equations over transverse gravitational perturbations it is obtained a closed system of two ordinary differential equations describing macroscopic cosmological evolution of the isotropic space-flat Universe filled with
Externí odkaz:
http://arxiv.org/abs/1509.01235
Autor:
Ignat'ev, Yurii
The physical instability of the Universe model with de Sitter beginning is proved in this article. 1. It is shown that even a small addition of ultrarelativistic matter turns the de Sitter Universe into the Universe with finite past. 2. Constant solu
Externí odkaz:
http://arxiv.org/abs/1508.05375
Autor:
Ignat'ev, Yurii
A closed mathematical model of the statistical self-gravitating system of scalar charged particles for conformal invariant scalar interactions is constructed on the basis of relativistic kinetics and gravitation theory. Asymptotic properties of the m
Externí odkaz:
http://arxiv.org/abs/1508.03028
In the paper we consider the macroscopic model of plasma of scalar charged particles, obtained by means of the statistical averaging of the microscopic equations of particle dynamics in a scalar field. On the basis of kinetic equations, obtained from
Externí odkaz:
http://arxiv.org/abs/1411.6244