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- W4324297371 abstract "Hubble constant $H_0$ and weighted amplitude of matter fluctuations $S_8$ determinations are biased to higher and lower values, respectively, in the late Universe with respect to early Universe values inferred by the Planck collaboration within flat $Lambda$CDM cosmology. If these anomalies are physical, i.e. not due to systematics, they naively suggest that $H_0$ decreases and $S_8$ increases with effective redshift. Here, on the assumption that matter density parameter today $Omega_{m}$ is effectively a constant, we show that $S_8$ determinations from $f sigma_8(z)$ constraints increase with effective redshift, thereby providing corroborating support for an $S_8$ discrepancy that is physical in origin. Results here and elsewhere suggest that the $Lambda$CDM cosmological parameters are redshift dependent. Fitting parameters that evolve with redshift is a recognisable hallmark of model breakdown." @default.
- W4324297371 created "2023-03-16" @default.
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- W4324297371 date "2023-03-13" @default.
- W4324297371 modified "2023-09-23" @default.
- W4324297371 title "$S_8$ increases with effective redshift in $Lambda$CDM cosmology" @default.
- W4324297371 doi "https://doi.org/10.48550/arxiv.2303.06928" @default.
- W4324297371 hasPublicationYear "2023" @default.
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