An STM cosmology with a linearly redshift-dependent extra-dimensional scale factor gives w(0) roughly -0.6 once the transition redshift is fixed to the Lambda-CDM value, but the construction is driven by that fitted input and the metric is not shown to satisfy the stated 5D vacuum equations.
Dark energy cosmology: The equivalent description via different theoretical models and cosmography tests
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Cosmic acceleration via space-time-matter theory
An STM cosmology with a linearly redshift-dependent extra-dimensional scale factor gives w(0) roughly -0.6 once the transition redshift is fixed to the Lambda-CDM value, but the construction is driven by that fitted input and the metric is not shown to satisfy the stated 5D vacuum equations.