Abstract
Hubble tension is routinely presented as a mismatch between the Hubble constant determined locally and a value inferred from the flat cosmology. In essence, the tension boils down to a disagreement between two numbers. Here, assuming the tension is cosmological in origin, we predict that within flat there should be other inferred values of , and that a “running of with redshift” can be expected. These additional determinations of may be traced to a difference between the effective equation of state (EoS) of the Universe within the Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology framework and the current standard model. We introduce a diagnostic that flags such a running of .
- Received 21 November 2020
- Accepted 25 March 2021
DOI:https://doi.org/10.1103/PhysRevD.103.103509
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