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- Title
Critical behavior and Joule–Thomson expansion of charged anti-de Sitter black hole in four-dimensional Rastall gravity.
- Authors
Zhang, Meng-Yao; Hassanabadi, Hassan; Chen, Hao; Long, Zheng-Wen; Yang, Hui
- Abstract
In this work, we investigate the thermodynamics of four-dimensional charged anti-de Sitter (AdS) black hole surrounded by perfect fluids in the context of Rastall theory. We derive the equations of state by considering the charge square Q 2 and the metric parameter N s as the thermodynamic variables. The Q 2 − Φ and N s − Θ s figures for some special surrounding fields were analyzed in detail. To better explain the phase transition, the behavior of the Gibbs free energy is presented. Note that the critical exponents are in perfect agreement with the van der Waals (vdWs) fluid system. In addition, we discuss Joule–Thomson (J-T) expansion in extended phase space. We determine the region where cooling or heating by investigating J-T coefficient. The inversion curves and the isenthalpic curves are plotted in the T − P plane. Also, we calculate the minimum inversion temperature T min and find that the ratio T min / T c is independent of the radiation field parameter N r .
- Subjects
JOULE-Thomson effect; GIBBS' free energy; PHASE transitions; TEMPERATURE inversions; CRITICAL exponents; HAWKING radiation; QUANTUM thermodynamics; BLACK holes
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2023, Vol 38, Issue 18/19, p1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X23500872