Regular Article - Theoretical Physics
Thermodynamic geometry of AdS black holes and black holes in a cavity
Center for Theoretical Physics, College of Physics, Sichuan University, Chengdu, 610064, China
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Accepted: 23 February 2020
Published online: 6 March 2020
The thermodynamic geometry has been proved to be quite useful in understanding the microscopic structure of black holes. We investigate the phase structure, thermodynamic geometry and critical behavior of a Reissner–Nordstrom-AdS black hole and a Reissner–Nordstrom black hole in a cavity, which can reach equilibrium in a canonical ensemble. Although the phase structure and critical behavior of both cases show striking resemblance, we find that there exist significant differences between the thermodynamic geometry of these two cases. Our results imply that there may be a connection between the black hole microstates and its boundary condition.
© The Author(s), 2020