A metric f(R) gravity model with dark energy decaying into dark matter produces a running Hubble constant that tracks the binned supernova decline better than a power law, but the fit is poor and does not resolve the Hubble tension.
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Decay of dark energy into dark matter in a metric $f(R)$ gravity: effective running Hubble constant
A metric f(R) gravity model with dark energy decaying into dark matter produces a running Hubble constant that tracks the binned supernova decline better than a power law, but the fit is poor and does not resolve the Hubble tension.