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arXiv · 1601.07890

Friedmann-Robertson-Walker models do not require zero active mass

Do Young Kim·Anthony N. Lasenby·Michael P. Hobson
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Abstract

The $R_h = ct$ cosmological model has received considerable attention in recent years owing to claims that it is favoured over the standard $\Lambda$ cold dark matter ($\Lambda$CDM) model by most observational data. A key feature of the $R_h = ct$ model is that the zero active mass condition $\rho + 3p = 0$ holds at all epochs. Most recently, Melia has claimed that this condition is a requirement of the symmetries of the Friedmann-Robertson-Walker (FRW) spacetime. We demonstrate that this claim is false and results from a flaw in the logic of Melia's argument.

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Do Young Kim, Anthony N. Lasenby, Michael P. Hobson. 2016-01-28. Friedmann-Robertson-Walker models do not require zero active mass. https://doi.org/10.1093/mnrasl%2Fslw079

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