Fitting time-varying dark energy to a single constant equation of state returns the model's w at a pivot redshift near z=0.2, with model-dependent scatter between 0.17 and 0.25.
Suzuki et al., Astrophys
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What do we learn by mapping dark energy to a single value of $w$?
Fitting time-varying dark energy to a single constant equation of state returns the model's w at a pivot redshift near z=0.2, with model-dependent scatter between 0.17 and 0.25.