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Thermodynamics of Gauss-Bonnet-de Sitter Black Holes by Haroon, Sumarna; Hennigar, Robie A.; Mann, Robert B.; Simovic, Fil is a scholarly article available to read on EtoBox.

What is Thermodynamics of Gauss-Bonnet-de Sitter Black Holes about?

We investigate the thermodynamics of Gauss-Bonnet black holes in asymptotically de Sitter spacetimes embedded in an isothermal cavity, via a Euclidean action approach. We consider both charged and uncharged black holes, working in the extended phase space where the cosmological constant is treated as a thermodynamic pressure. We examine the phase structure of these black holes through their free energy. In the uncharged case, we find both Hawking-Page and small-to-large black hole phase transitions, whose character depends on the sign of the Gauss-Bonnet coupling. In the charged case, we demonstrate the presence of a swallowtube, signaling a compact region in phase space where a small-to-large black hole transition occurs.

Author

Haroon, Sumarna; Hennigar, Robie A.; Mann, Robert B.; Simovic, Fil

Published

2020

Language

EN