Diffusion-based unimodular gravity models for the H0 tension are thermodynamically inadmissible because they require a growing effective cosmological term incompatible with the second law.
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Comment on Cosmological constraints on unimodular gravity models with diffusion (arXiv:2211.07424): thermodynamic inadmissibility of the H0 tension resolution mechanism
Diffusion-based unimodular gravity models for the H0 tension are thermodynamically inadmissible because they require a growing effective cosmological term incompatible with the second law.