KFU. Card publication. Inhomogeneous compact extra dimensions and de Sitter cosmology

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FEDERAL UNIVERSITY

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INHOMOGENEOUS COMPACT EXTRA DIMENSIONS AND DE SITTER COSMOLOGY

Form of presentation

Articles in Russian journals and collections

Year of publication

2020

Язык

русский

Authors, employees of KFU

Popov Arkadiy Aleksandrovich, author

Rubin Sergey Georgievich, author

Other authors

Bronnikov Kirill Aleksandrovich, author

Bibliographic description in the original language

Bronnikov, K.A., Popov, A.A. & Rubin, S.G. Inhomogeneous compact extra dimensions and de Sitter cosmology. Eur. Phys. J. C 80, 970 (2020)

Annotation

In the framework of multidimensional f(R) gravity, we study the possible metrics of compact extra dimensions assuming that our 4D space has the de Sitter metric. Manifolds described by such metrics could be formed at the inflationary and even higher energy scales. It is shown that in the presence of a scalar field, it is possible to obtain a variety of inhomogeneous metrics in the extra factor space M2. Each of these metrics leads to a certain value of the 4D cosmological constant Λ4, and in particular, it is possible to obtain Λ4=0, as is confirmed by numerically obtained solutions. A nontrivial scalar field distribution in the extra dimensions is an important feature of this family of metrics. The obtained solutions are shown to be stable under extra-dimensional perturbations.

Keywords

f(R) gravity, extra dimensions, de Sitter cosmology

The name of the journal

EUROPEAN PHYSICAL JOURNAL C

URL

https://link.springer.com/article/10.1140/epjc/s10052-020-08547-x#citeas

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

https://repository.kpfu.ru/eng/?p_id=240392&p_lang=2

Resource files

File name	Size (MB)	Format
InhomogeneousCompactExtraDimen.pdf	0,86	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Popov Arkadiy Aleksandrovich	ru_RU
dc.contributor.author	Rubin Sergey Georgievich	ru_RU
dc.contributor.author	Bronnikov Kirill Aleksandrovich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Bronnikov, K.A., Popov, A.A. & Rubin, S.G. Inhomogeneous compact extra dimensions and de Sitter cosmology. Eur. Phys. J. C 80, 970 (2020)	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=240392&p_lang=2	ru_RU
dc.description.abstract	EUROPEAN PHYSICAL JOURNAL C	ru_RU
dc.description.abstract	In the framework of multidimensional f(R) gravity, we study the possible metrics of compact extra dimensions assuming that our 4D space has the de Sitter metric. Manifolds described by such metrics could be formed at the inflationary and even higher energy scales. It is shown that in the presence of a scalar field, it is possible to obtain a variety of inhomogeneous metrics in the extra factor space M2. Each of these metrics leads to a certain value of the 4D cosmological constant Λ4, and in particular, it is possible to obtain Λ4=0, as is confirmed by numerically obtained solutions. A nontrivial scalar field distribution in the extra dimensions is an important feature of this family of metrics. The obtained solutions are shown to be stable under extra-dimensional perturbations.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	f(R) gravity	ru_RU
dc.subject	extra dimensions	ru_RU
dc.subject	de Sitter cosmology	ru_RU
dc.title	Inhomogeneous compact extra dimensions and de Sitter cosmology	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU