Thermodynamic Geometry of Reissener-Nordstr\"{o}m-de Sitter black hole and its extremal case

Understand

We study the thermodynamics and the different thermodynamic geometric methods of Reissener-Nordstr\"{o}m-de Sitter black hole and its extremal case, which is similar to the de Sitter black hole coupled to a scalar field, rather called an MTZ black hole.

• While studying the thermodynamics of the systems, we could find some abnormalities.
• In both cases, the thermodynamic geometric methods could give the correct explanation for the all abnormal thermodynamic behaviors in the system.