Black hole thermodynamics and accelerated expansion

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SUMMARY

The discussion focuses on the relationship between black hole thermodynamics and the accelerated expansion of the universe. Key concepts explored include P-V criticality, heat capacity, and Joule-Thomson expansion, which may provide insights into the stability and phase transitions of black holes. The conversation also references a paper linking black hole mass to dark energy, suggesting potential connections between thermodynamic behavior and observational cosmology. This indicates a growing interest in understanding how thermodynamic principles can elucidate cosmic phenomena.

PREREQUISITES
  • Understanding of black hole thermodynamics, including P-V criticality and heat capacity
  • Familiarity with Joule-Thomson expansion and its implications
  • Knowledge of cosmological concepts such as accelerated expansion and dark energy
  • Basic grasp of observational cosmology and its methodologies
NEXT STEPS
  • Research the implications of black hole thermodynamics on cosmic expansion
  • Study the paper linking black hole mass to dark energy content for deeper insights
  • Explore the role of heat engines in astrophysical contexts
  • Investigate the relationship between thermodynamic quantities and observational cosmology
USEFUL FOR

Astronomers, physicists, and cosmologists interested in the intersection of black hole physics and cosmic expansion, as well as researchers exploring the implications of thermodynamics in astrophysical phenomena.

djymndl07
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I have been thinking this for quite a few time. At this point we know that our universe is going through an accelerated expansion phase. I was also doing some work on blackhole thermodynamics, specially P-V criticality, heat capacity, Joule Thomson expansion, heat engine etc. These characteristics can explain stability, phase transition and microstructure of BH.

Now apart from the increasing area and entropy, is there any connection with BH thermodynamics and accelerated expansion of the universe.

In other words, I want to know if the accelerated expansion or the evolution of the universe can be explained through the thermodynamic behavior such as heat capacity, free energy, J-T expansion, criticality etc or not or is there any connection to these thermodynamic quantities with the observational cosmology?
 
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There was a paper a couple-ish years back attempting to link black hole mass with the dark energy content. Not really straight-up about thermodynamics of the thing, but maybe you'll find it useful nonetheless:
https://arxiv.org/abs/2302.07878
We had a short discussion about it on this forum back when it came out.
 
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