The FLRW metric assumes homogeneity and isotropy of the cosmos. Homogeneity and isotropy of the cosmos is only valid to about one part in 100,000. If dark energy is homogeneous and isotropic at all scales, which includes the smallest scales, then isn’t the scale of the FLRW metric incompatible with the scale of dark energy. If they were consistent with each other wouldn't their scale be the same? Does that imply that FLRW cannot be used or must be adjusted if it is used to try to resolve what dark energy is?
See
1. A. Chubykalo, V. Kuligin, A. Espinoza Spatial curvature as a distorted mapping of Euclidean space. Boson Journal of Modern Physics (BJMP). October 13, 2018, Volume 4, Issue 2, www.scitecresearch.com.
The Introduction to a 2015 article by Pacif and Mishra, FLRW non-singular model in general relativity, sketches another problem with the FLRW metric, namely that the scale factor becomes zero at some time in the past. Using a 4:3 ratio of dimensions, which relates to the principle of dimensional capacity and invariant ratios (outlined in Preprint Size, scaling, and invariant ratios
) seems to avoid the singularity issue for R.- Badges
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