2018/09/30 by H. Ghaffarnejad, Hossein Ghaffarnejad, Emad Yaraie +5
Physics and Astronomy · #Black Holes and Theoretical Physics #Black hole (networking) #Carnot cycle #Charge (physics) #Computer science #Context (archaeology) #Cosmology and Gravitation Theories #Electric charge #Heat engine #Noncommutative and Quantum Gravity Theories #Physics #Quantum mechanics #Thermodynamics #gr-qc #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2020.114941
published as Nuclear Physics B 2020 · 21 pages and 5 figures
arxiv created 2020/01/26 · openalex publication_date 2020/01/28 · arxiv updated 2020/02/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
By considering AdS charged black hole in the context of extended thermodynamic as the working substance we use it as a heat engine. We investigate the effect of hairy charge on the evolution of efficiency and Carnot efficiency along with electric charge. Because of interesting thermodynamic behavior of hairy black holes it would be natural to know their effects when we use black hole as a heat engine. We show that the hairy charge increases the efficiency, and so maximum temperature would be happened for bigger Maxwell charge when this hairy charge grows. For the fixed electric charges, the efficiency has a minimum value. In fact all critical points describe physical states except when the charge removed. If the electric charge takes a zero value then the hairy charge must be negative. We also seek behavior of the system for large charges which is provided a model with low-temperature thermodynamics.