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Inflationary universe from perfect fluid and F (R) gravity and its comparison with observational data

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dc.contributor.author Bamba K.
dc.contributor.author Nojiri S.
dc.contributor.author Odintsov S.
dc.contributor.author Sáez-Gómez D.
dc.date.accessioned 2018-09-18T20:23:36Z
dc.date.available 2018-09-18T20:23:36Z
dc.date.issued 2014
dc.identifier.issn 1550-7998
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/139408
dc.description.abstract © 2014 American Physical Society. We investigate the descriptions for the observables of inflationary models, in particular, the spectral index of curvature perturbations, the tensor-to-scalar ratio, and the running of the spectral index, in the framework of perfect fluid models and F(R) gravity theories through the reconstruction methods. Furthermore, the perfect fluid and F(R) gravity descriptions of inflation are compared with the recent cosmological observations such as the Planck satellite and BICEP2 experiment. It is demonstrated with explicit examples that perfect fluid may lead to the inflationary universe consistent with the Planck data. It is also shown that several F(R) gravity models, especially, a power-law model gives the best fit values compatible with the spectral index and tensor-to-scalar ratio within the allowed ranges suggested by the Planck and BICEP2 results.
dc.relation.ispartofseries Physical Review D - Particles, Fields, Gravitation and Cosmology
dc.title Inflationary universe from perfect fluid and F (R) gravity and its comparison with observational data
dc.type Article
dc.relation.ispartofseries-issue 12
dc.relation.ispartofseries-volume 90
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS15507998-2014-90-12-SID84919629238


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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