KFU. Card publication. Single-field model of gravitational-scalar instability. I. Evolution of perturbations

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SINGLE-FIELD MODEL OF GRAVITATIONAL-SCALAR INSTABILITY. I. EVOLUTION OF PERTURBATIONS

Form of presentation

Articles in international journals and collections

Year of publication

2022

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Authors, employees of KFU

Ignatev Yuriy Gennadievich, author

Bibliographic description in the original language

Yu. G. Ignat'ev. Single-field model of gravitational-scalar instability. I. Evolution of perturbationsyu // arXiv:2207.05066 [gr-qc]

Annotation

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 system of scalarly charged degenerate fermions, a numerical model of the cosmological evolution of gravitational-scalar perturbations for a one-component cosmological system with a canonical scalar interaction is constructed and studied. The influence of the magnitude of the scalar charge of fermions on the differential and integral parameters of the instability is revealed. It is shown that the gravitational-scalar instability in the early stages of expansion in the model under study arises at sufficiently small scalar charges. 4 fundamentally different types of perturbations are identified, as well as 4 types of gravitational-scalar instability, determined by the fundamental parameters of the model. Examples of numerical models are given that provide large values of the increments of the increase in the amplitude of perturbations.

Keywords

gravitation, cosmology, scalar Higgs field, scalar charged fermions, unstability, WKB

The name of the journal

arXiv: General Relativity and Quantum Cosmology

URL

https://arxiv.org/abs/2207.05066

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

https://repository.kpfu.ru/eng/?p_id=268513&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Ignatev Yuriy Gennadievich	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Yu. G. Ignat'ev. Single-field model of gravitational-scalar instability. I. Evolution of perturbations� // arXiv:2207.05066 [gr-qc]	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=268513&p_lang=2	ru_RU
dc.description.abstract	arXiv: General Relativity and Quantum Cosmology	ru_RU
dc.description.abstract	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 system of scalarly charged degenerate fermions, a numerical model of the cosmological evolution of gravitational-scalar perturbations for a one-component cosmological system with a canonical scalar interaction is constructed and studied. The influence of the magnitude of the scalar charge of fermions on the differential and integral parameters of the instability is revealed. It is shown that the gravitational-scalar instability in the early stages of expansion in the model under study arises at sufficiently small scalar charges. 4 fundamentally different types of perturbations are identified, as well as 4 types of gravitational-scalar instability, determined by the fundamental parameters of the model. Examples of numerical models are given that provide large values of the increments of the increase in the amplitude of perturbations.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	gravitation	ru_RU
dc.subject	cosmology	ru_RU
dc.subject	scalar Higgs field	ru_RU
dc.subject	scalar charged fermions	ru_RU
dc.subject	unstability	ru_RU
dc.subject	WKB	ru_RU
dc.title	Single-field model of gravitational-scalar instability. I. Evolution of perturbations	ru_RU
dc.type	Articles in international journals and collections	ru_RU