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Testing the equation of state for viscous dark energy

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dc.contributor.author Odintsov S.D.
dc.contributor.author Gómez D.S.C.
dc.contributor.author Sharov G.S.
dc.date.accessioned 2021-02-26T20:50:58Z
dc.date.available 2021-02-26T20:50:58Z
dc.date.issued 2020
dc.identifier.issn 2470-0010
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/163238
dc.description.abstract © 2020 American Physical Society. Some cosmological scenarios with bulk viscosity for the dark energy fluid are considered. Based on some considerations related to hydrodynamics, two different equations of state for dark energy are assumed, leading to power-law and logarithmic effective corrections to the pressure. The models are tested with the latest astronomical data from type Ia supernovae (Pantheon sample), measurements of the Hubble parameter H(z), baryon acoustic oscillations and cosmic microwave background radiation. In comparison with the ΛCDM model, some different results are obtained and their viability is discussed. The power-law model shows some modest results, achieved under negative values of bulk viscosity, while the logarithmic scenario provide good fits in comparison to the ΛCDM model.
dc.relation.ispartofseries Physical Review D
dc.title Testing the equation of state for viscous dark energy
dc.type Article
dc.relation.ispartofseries-issue 4
dc.relation.ispartofseries-volume 101
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS24700010-2020-101-4-SID85079800243


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  • Публикации сотрудников КФУ Scopus [22633]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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