Form of presentation | Conference proceedings in Russian journals and collections |
Year of publication | 2022 |
Язык | английский |
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Popov Arkadiy Aleksandrovich, author
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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 |
руды Математического центра имени Н.И. Лобачевского. Т.62 // Материалы Международной конференции ”Лобачевские чтения” – Казань: Изд-во КФУ, 2022. – Т.62.
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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 | |
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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 |
|