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dc.contributor.authorOdintsov, Sergei D.
dc.contributor.authorSáez Gómez, Diego
dc.contributor.authorSharov, German S.
dc.date.accessioned2020-05-16T11:21:36Z
dc.date.available2020-05-16T11:21:36Z
dc.date.issued2020
dc.identifier.citationPhysical Review D, 2020, vol. 101es
dc.identifier.issn2470-0010es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/40869
dc.description.abstractSome 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 HðzÞ, 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.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.titleTesting the equation of state for viscous dark energyes
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1103/PhysRevD.101.044010es
dc.identifier.publicationissue4es
dc.identifier.publicationtitlePhysical Review Des
dc.identifier.publicationvolume101es
dc.peerreviewedSIes
dc.description.projectMinisterio de Economía, Industria y Competitividad (project FIS2016-76363-P)
dc.description.projectAgencia de Gestión de Ayudas Universitarias y de Investigación (project 2017 SGR 247)
dc.description.projectCANTATA COST action (grant CA15117)
dc.identifier.essn2470-0029es
dc.type.hasVersioninfo:eu-repo/semantics/draftes


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