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- W3100508401 abstract "Brans-Dicke (BD) cosmology is reconsidered from an approach in which the model can be formulated in $Lambda$CDM form, but at the expense of replacing the rigid cosmological constant $Lambda$ with a dynamical quasivacuum component which depends on a small parameter $epsilon$. The product of $epsilon$ times the BD-parameter $omega_{rm BD}$ becomes exactly determined in terms of the ordinary cosmological parameters. The GR limit is recovered for $omega_{rm BD}toinfty$ when $epsilonto 0$. We solve the background cosmology of the model as well as the perturbations equations. When fitted to the cosmological data, we find that the BD-cosmology, transcribed in such an effective GR form, appears to be competitive with the $Lambda$CDM and emulates the running vacuum model." @default.
- W3100508401 created "2020-11-23" @default.
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- W3100508401 date "2018-12-13" @default.
- W3100508401 modified "2023-10-14" @default.
- W3100508401 title "Brans–Dicke cosmology mimicking running vacuum" @default.
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- W3100508401 doi "https://doi.org/10.1142/s0217732318502280" @default.
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