Black Hole Images as Thermodynamic Probes
Published:Dec 30, 2025 12:15
•1 min read
•ArXiv
Analysis
This paper explores how black hole images can be used to understand the thermodynamic properties and evolution of black holes, specifically focusing on the Reissner-Nordström-AdS black hole. It demonstrates that these images encode information about phase transitions and the ensemble (isobaric vs. isothermal) under which the black hole evolves. The key contribution is the identification of nonmonotonic behavior in image size along isotherms, which allows for distinguishing between different thermodynamic ensembles and provides a new way to probe black hole thermodynamics.
Key Takeaways
- •Black hole images encode information about thermodynamic phase transitions.
- •Image size behavior distinguishes between isobaric and isothermal ensembles.
- •Nonmonotonic behavior in isothermal evolution provides a new diagnostic tool.
- •The study introduces a new paradigm for exploring thermodynamic imprints in black hole systems.
Reference
“Image size varies monotonically with the horizon radius along isobars, whereas it exhibits nonmonotonic behavior along isotherms.”