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Based on the previously formulated mathematical model of a statistical system with scalar interaction of fermions, a cosmological model based on a one-component statistical system of doubly scalar charged degenerate fermions interacting…

General Relativity and Quantum Cosmology · Physics 2022-03-25 Yu. G. Ignat'ev , A. A. Agathonov , D. Yu. Ignatyev

Based on the proposed earlier by the Author approach to macroscopic description of scalar interaction, this paper develops the macroscopic model of relativistic plasma with a fantom scalar interaction of elementary particles. In the article…

General Relativity and Quantum Cosmology · Physics 2015-06-22 Yu. G. Ignatyev , A. A. Agathonov , D. Yu. Ignatyev

Based on the mathematical model of a statistical system with scalar interaction of fermions formulated earlier, a cosmological model based on a two-component statistical system of scalar charged degenerate fermions interacting with an…

General Relativity and Quantum Cosmology · Physics 2022-03-24 Yu. G. Ignat'ev , A. A. Agathonov , D. Yu. Ignatyev

Cosmological solutions of Einstein's equations for equilibrium statistical systems of particles with scalar interaction are investigated. It is shown that the scalar field can effectively change the state equation of a statistical system,…

General Relativity and Quantum Cosmology · Physics 2010-11-29 Yu. G. Ignatyev , R. F. Miftakhov

Cosmological solutions of the equations with scalar interaction are being studied. It is shown, that the scalar field can effectively change the equation of state of statistical system, that leads to series of cosmological consequences.

General Relativity and Quantum Cosmology · Physics 2015-03-17 Yu. G. Ignatyev , R. F. Miftakhov

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…

General Relativity and Quantum Cosmology · Physics 2018-08-15 Yurii Ignat'ev , Alexander Agathonov , Irina Kokh

We shall present a complete (compactified) dynamical systems analysis of the Quintom model comprised of an interacting quintessence scalar field and a phantom. We find a range for the model parameters $\kappa, \lambda$ such that there are…

General Relativity and Quantum Cosmology · Physics 2022-11-21 Jonathan Tot , Balkar Yildirim , Alan Coley , Genly Leon

The cosmological history and evolution are examined for gravitational models with interaction in the dark sector of the universe. In particular, we consider the dark energy to be described by a phantom scalar field and the dark matter $\rho…

General Relativity and Quantum Cosmology · Physics 2024-12-11 Andronikos Paliathanasis , Amlan Halder , Genly Leon

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,…

General Relativity and Quantum Cosmology · Physics 2015-06-23 Yurii Ignat'ev , Alexander Agathonov , Mikhail Mikhailov , Dmitry Ignatyev

A detailed qualitative analysis and numerical modeling of the evolution of cosmological models based on nonlinear classical and phantom scalar fields with self-action are performed. Complete phase portraits of the corresponding dynamical…

General Relativity and Quantum Cosmology · Physics 2019-05-03 Yu. G. Ignat'ev , A. A. Agathonov

In this work, a cosmological model inspired by string/M- theory with fermionic field is taken into consideration. Here it is investigated whether the introduction of a non-Dirac fermionic field--characterized by an \textit{interaction…

General Relativity and Quantum Cosmology · Physics 2011-04-26 R. Rakhi , G. V. Vijayagovindan , K. Indulekha

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…

General Relativity and Quantum Cosmology · Physics 2018-10-24 Yurii Ignat'ev , Alexander Agathonov , Irina Kokh

Based on the previously formulated mathematical model of a statistical system with scalar interaction of fermions and the theory of gravitational-scalar instability of a cosmological model based on a two-component statistical system of…

General Relativity and Quantum Cosmology · Physics 2022-03-24 Yu. G. Ignat'ev

Based on mathematical model of the statistical Fermi system with the interparticle interaction which was constructed in the previous articles, this work offers the construction and analysis of the numerical models of cosmological evolution…

General Relativity and Quantum Cosmology · Physics 2023-07-19 Yu. G. Ignatyev , A. A. Agathonov

It has recently been realized that many theories of physics beyond the Standard Model give rise to cosmological histories exhibiting extended epochs of cosmological stasis. During such epochs, the abundances of different energy components…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-17 Keith R. Dienes , Lucien Heurtier , Fei Huang , Tim M. P. Tait , Brooks Thomas

We argue that an interacting scalar-fermion distribution can be used to demonstrate the cosmic acceleration in General Relativity. The interaction is of Yukawa nature and it drives the fermion density to decay with cosmic time. The…

General Relativity and Quantum Cosmology · Physics 2022-05-02 Soumya Chakrabarti , Amitabha Lahiri

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…

General Relativity and Quantum Cosmology · Physics 2024-11-26 Yu. G. Ignsat'ev , I. A. Kokh

Mathematical models describing the cosmological evolution of classical and phantom scalar fields with self-action are formulated and analyzed. Systems of dynamical equations in the plane, describing homogeneous cosmological models, have…

General Relativity and Quantum Cosmology · Physics 2019-03-15 Yu. G. Ignat'ev , A. A. Agathonov

On the basis of the previously formulated mathematical model of a statistical system with a scalar interaction of fermions and the theory of gravitational-scalar instability of a cosmological model based on a two-component statistical…

General Relativity and Quantum Cosmology · Physics 2022-07-13 Yu. G. Ignat'ev

Based on the proposed earlier by the Author approach to macroscopic description of scalar interaction, this paper develops the macroscopic model of relativistic plasma with a fantom scalar interaction of elementary particles. In the given…

General Relativity and Quantum Cosmology · Physics 2015-06-22 Yu. G. Ignatyev , D. Yu. Ignatyev
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