Thermodynamic of the charged AdS black holes in Rastall gravity: P - V critical and Joule Thomson expansion

In this paper, we study the thermodynamic of the charged AdS black holes in Rastall gravity. Firstly, the thermodynamic quantities of the charged AdS black holes in Rastall gravity are reviewed and the state equation of this black hole is obtained. Then, we investigate the P - V critical and the Joule-Thomson expansion of the charged AdS black holes in Rastall gravity in which the critical temperature and the critical exponents are obtained. In addition, we get the inversion temperature and plot the isenthalpic and inversion curves in the T - P plane, and also determine the cooling-heating regions of this black hole through the Joule-Thomson expansion. Finally, we investigate the ratio between the minimum inversion and critical temperatures, and find that the Rastall constant b does not affect of this ratio.