RT info:eu-repo/semantics/article
T1 Testing the equation of state for viscous dark energy
A1 Odintsov, Sergei D.
A1 Sáez Gómez, Diego
A1 Sharov, German S.
AB Some cosmological scenarios with bulk viscosity for the dark energy fluid are considered. Based onsome considerations related to hydrodynamics, two different equations of state for dark energy areassumed, leading to power-law and logarithmic effective corrections to the pressure. The models are testedwith the latest astronomical data from type Ia supernovae (Pantheon sample), measurements of the Hubbleparameter HðzÞ, baryon acoustic oscillations and cosmic microwave background radiation. In comparisonwith the ΛCDM model, some different results are obtained and their viability is discussed. The power-lawmodel shows some modest results, achieved under negative values of bulk viscosity, while the logarithmicscenario provide good fits in comparison to the ΛCDM model.
SN 2470-0010
YR 2020
FD 2020
LK http://uvadoc.uva.es/handle/10324/40869
UL http://uvadoc.uva.es/handle/10324/40869
LA eng
NO Physical Review D, 2020, vol. 101
DS UVaDOC
RD 29-dic-2024