KFU. Card publication. Ghost-free F(R,G) gravity

KAZAN
FEDERAL UNIVERSITY

- RUS
- 中文
- ES

GHOST-FREE F(R,G) GRAVITY

Form of presentation

Conference proceedings in Russian journals and collections

Year of publication

2022

Язык

английский

Authors, employees of KFU

Popov Arkadiy Aleksandrovich, author

Bibliographic description in the original language

Popov A.A. Ghost-free F(R,G) gravity / A.A. Popov // Trudy Matematicheskogo centra imeni N.I. Lobachevskogo. T.62 // Materialy Mezhdunarodnoy konferencii ”Lobachevskie chteniya” – Kazan: Izd-vo KFU, 2022. – T.62. – S. 100-102

Annotation

руды Математического центра имени Н.И. Лобачевского. Т.62 // Материалы Международной конференции ”Лобачевские чтения” – Казань: Изд-во КФУ, 2022. – Т.62.

Keywords

gravity, modified theory, ghost degrees of freedom

The name of the journal

URL

https://kpfu.ru/portal/docs/F_1591875385/LR2022.pdf

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

https://repository.kpfu.ru/eng/?p_id=270592&p_lang=2

Resource files

File name	Size (MB)	Format
Popov.pdf	0,26	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Popov Arkadiy Aleksandrovich	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	Popov A.A. Ghost-free F(R,G) gravity / A.A. Popov // Труды Математического центра имени Н.И. Лобачевского. Т.62 // Материалы Международной конференции ”Лобачевские чтения” – Казань: Изд-во КФУ, 2022. – Т.62. – С. 100-102	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=270592&p_lang=2	ru_RU
dc.description.abstract	руды Математического центра имени Н.И. Лобачевского. Т.62 // Материалы Международной конференции ”Лобачевские чтения” – Казань: Изд-во КФУ, 2022. – Т.62.	ru_RU
dc.description.abstract	This paper discusses the problem of ghost degrees of freedom in $F\left(R,\mathcal{G} \right)$ gravity ($\mathcal{G} \equiv R^2 - 4 R_{\mu\nu} R^{\mu\nu} + R_{\mu\nu\rho\sigma} R^{\mu\nu\rho\sigma} $). These ghosts occur due to the presence of higher than two derivatives in the field equations. Motivated by the importance of $F\left(\mathcal{G} \right)$ gravity for providing viable inflationary and dark energy phenomenologies, in this work we shall provide a technique that can render $F\left( R,\mathcal{G} \right)$ gravity theories free from ghost degrees of freedom. This will be done by introducing two auxiliary scalar fields, and by employing the Lagrange multiplier technique, the theory is ghost free in the Einstein frame. Also the framework can be viewed as a reconstruction technique and can be used as a method in order to realize several cosmological evolutions of interest. We demonstrate how we can realize several cosmologically interesting phenomenologies by using the reconstruction technique.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	gravity	ru_RU
dc.subject	modified theory	ru_RU
dc.subject	ghost degrees of freedom	ru_RU
dc.title	Ghost-free F(R,G) gravity	ru_RU
dc.type	Conference proceedings in Russian journals and collections	ru_RU