Extended phase space thermodynamics and P–V criticality: Brans–Dicke–Born–Infeld vs. Einstein–Born–Infeld-dilaton black holes

The European Physical Journal C

R. Moradi Tad¹  M. S. Talezadeh¹  Z. Armanfard¹  S. H. Hendi² 

[1] Physics Department and Biruni Observatory, College of Sciences, Shiraz University, 71454, Shiraz, Iran;Physics Department and Biruni Observatory, College of Sciences, Shiraz University, 71454, Shiraz, Iran;Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), P. O. Box 55134-441, Maragha, Iran;

关键词: Black Hole;    Black Hole Solution;    Conformal Transformation;    Einstein Frame;    Jordan Frame;   

DOI  :  10.1140/epjc/s10052-016-4106-9

来源: Springer

【 摘 要 】

Motivated by a thermodynamic analogy of black holes and Van der Waals liquid/gas systems, in this paper, we study P–V criticality of both dilatonic Born–Infeld black holes and their conformal solutions, Brans–Dicke–Born–Infeld solutions. Due to the conformal constraint, we have to neglect the old Lagrangian of dilatonic Born–Infeld theory and its black hole solutions, and introduce a new one. We obtain spherically symmetric nonlinearly charged black hole solutions in both Einstein and Jordan frames and then we calculate the related conserved and thermodynamic quantities. After that, we extend the phase space by considering the proportionality of the cosmological constant and thermodynamical pressure. We obtain critical values of the thermodynamic coordinates through numerical methods and plot the relevant P–V and G–T diagrams. Investigation of the mentioned diagrams helps us to study the thermodynamical phase transition. We also analyze the effects of varying different parameters on the phase transition of black holes.

【 授权许可】

CC BY