Back to Search
Start Over
The P-V Phase Transition of the FRW Universe
- Source :
- Eur. Phys. J. C 82, 1047 (2022)
- Publication Year :
- 2021
-
Abstract
- We define thermodynamic pressure $P$ by work density $W$ as the conjugate quantity of thermodynamic volume $V$ from field equation. We derive the equations of state $P$=$P(V, T)$ for the Friedmann-Robertson-Walker (FRW) universe in Einstein gravity and a modified gravity respectively. We find that the equation of state from Einstein gravity shows no $P$-$V$ phase transition, while the equation of state from the modified gravity does, where the critical exponents are the same as those in mean field theory.<br />Comment: 11 pages, major revision, version published in EPJC
Details
- Database :
- arXiv
- Journal :
- Eur. Phys. J. C 82, 1047 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2108.09411
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1140/epjc/s10052-022-10976-9