Stability and phase transition of black holes in Einstein-Maxwell-dilaton gravity
Year: 2024
Type: article
Abstract: In this research, we study black hole stability and phase transition in Einstein Maxwell-dilaton(EMD) gravity. A dilaton field is non-minimally related to the Maxwell field in theEMD gravity and is an intriguing alternative for General Relativity. By using the thermodynamiclaws of the black holes, temperature, entropy, heat capacity, pressure, critical points and Gibbs freeenergy of charged static dilaton black holes in EMD gravity were all thoroughly explored and effectsof dilaton constant on these quantities are studied and the results are compared with Schwarzschild,Reissner-Nordstrom, and Gibbons-Maeda-Garafinkle-Horowitz-Strominger (GMGHS) black holes. Inother cases, the system has stable and unstable areas. Since the heat capacity is discontinuous, thesystem experiences a phase transition, and Van der Waals-like phase transitions occur between thesmall and large black holes. It has been observed that the heat capacity for the GMGHS andSchwarzschild black holes is always negative, making these systems unstable.
Source: Nuclear Physics B
Authors: K. Ghaderi, Anirudh Pradhan, A. Mahmoodzadeh
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4401818337