KFU. Card publication. Cosmological models based on an asymmetric scalar doublet with kinetic coupling of components. II. Numerical modeling.

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FEDERAL UNIVERSITY

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COSMOLOGICAL MODELS BASED ON AN ASYMMETRIC SCALAR DOUBLET WITH KINETIC COUPLING OF COMPONENTS. II. NUMERICAL MODELING.

Form of presentation

Articles in international journals and collections

Year of publication

2024

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Authors, employees of KFU

Ignatev Yuriy Gennadievich, author

Kokh Irina Aleksandrovna, author

Bibliographic description in the original language

Yu. G. Ignat'ev, I. A. Kokh, Cosmological models based on an asymmetric scalar doublet with kinetic coupling of components. II. Numerical modeling. // arXiv:2406.00742 [gr-qc]

Annotation

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

The name of the journal

arXiv: General Relativity and Quantum Cosmology

URL

https://arxiv.org/abs/2406.00742

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=300481&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Ignatev Yuriy Gennadievich	ru_RU
dc.contributor.author	Kokh Irina Aleksandrovna	ru_RU
dc.date.accessioned	2024-01-01T00:00:00Z	ru_RU
dc.date.available	2024-01-01T00:00:00Z	ru_RU
dc.date.issued	2024	ru_RU
dc.identifier.citation	Yu. G. Ignat'ev, I. A. Kokh, Cosmological models based on an asymmetric scalar doublet with kinetic coupling of components. II. Numerical modeling. // arXiv:2406.00742 [gr-qc]	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=300481&p_lang=2	ru_RU
dc.description.abstract	arXiv: General Relativity and Quantum Cosmology	ru_RU
dc.description.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.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	cosmological model	ru_RU
dc.subject	phantom and classical scalar fields	ru_RU
dc.subject	quality analysis	ru_RU
dc.subject	asymptotic behavior	ru_RU
dc.subject	numerical modelling	ru_RU
dc.subject	scalar field generation	ru_RU
dc.subject	types of behavior	ru_RU
dc.title	Cosmological models based on an asymmetric scalar doublet with kinetic coupling of components. II. Numerical modeling.	ru_RU
dc.type	Articles in international journals and collections	ru_RU