| Форма представления | Статьи в зарубежных журналах и сборниках |
| Год публикации | 2024 |
| Язык | английский |
|
Игнатьев Юрий Геннадиевич, автор
Кох Ирина Александровна, автор
|
| Библиографическое описание на языке оригинала |
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]
|
| Аннотация |
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. |
| Ключевые слова |
cosmological model, phantom and classical scalar fields, quality analysis, asymptotic behavior, numerical modelling, scalar field generation, types of behavior |
| Название журнала |
arXiv: General Relativity and Quantum Cosmology
|
| URL |
https://arxiv.org/abs/2406.00742 |
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=300481 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Игнатьев Юрий Геннадиевич |
ru_RU |
| dc.contributor.author |
Кох Ирина Александровна |
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/?p_id=300481 |
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 |
Статьи в зарубежных журналах и сборниках |
ru_RU |
|
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