Spatial Curvature and Thermodynamics
Cosmology and Nongalactic Astrophysics
2023-04-11 v2 General Relativity and Quantum Cosmology
Abstract
Reasonable parametrizations of the current Hubble data set of the expansion rate of our homogeneous and isotropic universe, after suitable smoothing of these data, strongly suggests that the area of the apparent horizon increases irrespective of whether the spatial curvature of the metric is open, flat or closed. Put in another way, any sign of the spatial curvature appears consistent with the second law of thermodynamics.
Cite
@article{arxiv.2301.09823,
title = {Spatial Curvature and Thermodynamics},
author = {Narayan Banerjee and Purba Mukherjee and Diego Pavón},
journal= {arXiv preprint arXiv:2301.09823},
year = {2023}
}
Comments
9 pages, 7 sets of figures, Version published in MNRAS