Equation of State and Joule-Thomson Expansion for the FRW Universe in the Brane World Scenario

2022/08/26 by Kong, Shi-Bei, Abdusattar, Haximjan, Zhang, Hongsheng +1 · 2 citations
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2208.12603

Abstract

We study the thermodynamic properties of the Friedmann-Robertson-Walker (FRW) universe in the brane world scenario, concentrating on the Randall-Sundrum II model. From the first law of thermodynamics for the FRW universe, we find that the work density W can be identified with the thermodynamic pressure P. We construct the equation of state P=P(V,T) for the FRW universe in the brane world scenario, which does not show P-V phase transition. We further study the Joule-Thomson expansion of the FRW universe, and derive the Joule-Thomson coefficient, which has an inversion point that is affected by the brane tension. These results could provide new ways to test the brane world scenario and extra dimension.

Cited by

• A dynamical systems perspective on the thermodynamics of late-time cosmology
• Heat Capacity and the Violation of Scaling Laws in Gravitational System

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