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Extended Phase Space in the Framework of Holography
Z. Sherkatghanad(),B. Mirza(),H. Nadi(),M. Rostami()

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Fig. 2. (Color online) Gibbs free energy of the RN-AdS black hole with respect to temperature for $d=4$, $Q=0.1$. Pressure $P$ increases from bottom to top. The dashed (red) line corresponds to the critical pressure $P=P_c= 0.3315$.