Version 1
: Received: 20 March 2024 / Approved: 20 March 2024 / Online: 20 March 2024 (16:58:34 CET)
Version 2
: Received: 23 March 2024 / Approved: 26 March 2024 / Online: 26 March 2024 (10:51:27 CET)
How to cite:
Haug, E.; Tatum, E. Friedmann Type Equations in Thermodynamic Form Lead to Much Tighter Constraints on the Critical Density of the Universe. Preprints2024, 2024031241. https://doi.org/10.20944/preprints202403.1241.v2
Haug, E.; Tatum, E. Friedmann Type Equations in Thermodynamic Form Lead to Much Tighter Constraints on the Critical Density of the Universe. Preprints 2024, 2024031241. https://doi.org/10.20944/preprints202403.1241.v2
Haug, E.; Tatum, E. Friedmann Type Equations in Thermodynamic Form Lead to Much Tighter Constraints on the Critical Density of the Universe. Preprints2024, 2024031241. https://doi.org/10.20944/preprints202403.1241.v2
APA Style
Haug, E., & Tatum, E. (2024). Friedmann Type Equations in Thermodynamic Form Lead to Much Tighter Constraints on the Critical Density of the Universe. Preprints. https://doi.org/10.20944/preprints202403.1241.v2
Chicago/Turabian Style
Haug, E. and Eugene Tatum. 2024 "Friedmann Type Equations in Thermodynamic Form Lead to Much Tighter Constraints on the Critical Density of the Universe" Preprints. https://doi.org/10.20944/preprints202403.1241.v2
Abstract
Based on recent progress in cosmological thermodynamics, we present a new thermody- namic formulation of the Friedmann equations in the new Haug-Tatum cosmology model, as well as for other similar models put forward in the literature from different solutions to Einstein’s field equation. Since the CMB temperature has been measured much more accu- rately than the Hubble constant, we demonstrate that our thermodynamic formulation of the Friedmann equation dramatically narrows the acceptable range for the critical density of the universe. Furthermore, we show how our thermodynamic formulation leads to a more precise cosmological constant estimate.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.