General Modified Friedmann Equations in Rainbow Flat Universe, by Thermodynamics
General Relativity and Quantum Cosmology
2020-05-28 v1 High Energy Physics - Phenomenology
Abstract
We investigate the derivation of Friedmann equations in Rainbow gravity following Jacobson thermodynamic approach. We do not restrict the rainbow functions to be constant as is customarily used, and show that the first law of thermodynamics with a corresponding `classical' proportionality between entropy and surface area, supplemented eventually by a `quantum' logarithmic correction, are not in general sufficient to obtain the equations in flat FRW metrics.
Cite
@article{arxiv.1902.00783,
title = {General Modified Friedmann Equations in Rainbow Flat Universe, by Thermodynamics},
author = {A. Ashour and M. Alcheikh and N. Chamoun},
journal= {arXiv preprint arXiv:1902.00783},
year = {2020}
}
Comments
7 pages, to appear in EPJC