Abstract
In this paper, we investigate the thermodynamics of dyonic black holes in the presence of Born-Infeld electromagnetic field. We show that electric-magnetic duality reported for dyonic solutions with Maxwell field is omitted in case of Born-Infeld generalization. We also confirm that generalization to nonlinear field provides the possibility of canceling the effects of cosmological constant. This is done for nonlinearity parameter with 10−33 eV2 order of magnitude which is high nonlinearity regime. In addition, we show that for small electric/magnetic charge and high nonlinearity regime, black holes would develop critical behavior and several phases. In contrast, for highly charged case and Maxwell limits (small nonlinearity), black holes have one thermal stable phase. We also find that the pressure of the cold black holes is bounded by some constraints on its volume while hot black holes' pressure has physical behavior for any volume. In addition, we report on possibility of existences of triple point and reentrant of phase transition in thermodynamics of these black holes. Finally, we show that if electric and magnetic charges are identical, the behavior of our solutions would be Maxwell like (independent of nonlinear parameter and field). In other words, nonlinearity of electromagnetic field becomes evident only when these black holes are charged magnetically and electrically different.
Highlights
In the past two decades, the progresses in thermodynamics of black holes provided us with new deep insights into physics of black holes as well as its applications in other fields
We investigate the thermodynamics of the dyonic black holes in the presence of Born-Infeld (BI) nonlinear electromagnetic field
We study the thermal phases of these black holes, their behaviors in different regimes, limitation on having physical solutions, existence of phenomena such as reentrant of phase transitions and triple point
Summary
In the past two decades, the progresses in thermodynamics of black holes provided us with new deep insights into physics of black holes as well as its applications in other fields. Dyonic black holes were obtained in effective [19] and hetroctic [20] string theories, supergravity [21,22], massive gravity [18], gravity’s rainbow [23] and dilatonic gravity [24,25] We investigate the thermodynamics of the dyonic black holes in the presence of Born-Infeld (BI) nonlinear electromagnetic field. We study the thermal phases of these black holes, their behaviors in different regimes, limitation on having physical solutions, existence of phenomena such as reentrant of phase transitions and triple point.
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