A one-parameter modification that lets gravity differ above and below the Hubble scale fits CMB and BAO data with a preference for slightly weaker superhorizon gravity, at about 2 sigma.
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A glitch in gravity: cosmic Lorentz-violation from fiery Big Bang to glacial heat death
A one-parameter modification that lets gravity differ above and below the Hubble scale fits CMB and BAO data with a preference for slightly weaker superhorizon gravity, at about 2 sigma.