Thermal analysis and Joule-Thomson expansion of black hole exhibiting metric-affine gravity  

作　　者：Muhammad Yasir 夏铁成 Faisal Javed G.Mustafa Muhammad Yasir;Tiecheng Xia;Faisal Javed;G.Mustafa(Department of Mathematics,Shanghai University,Shanghai 200444,China;Department of Physics,Zhejiang Normal University,Jinhua 321004,China;Zhejiang Institute of Photoelectronics and Zhejiang Institute for Advanced Light Source,Zhejiang Normal University,Jinhua 321004,China;New Uzbekistan University,Mustaqillik Ave.54,Tashkent 100007,Uzbekistan)

机构地区：[1]Department of Mathematics,Shanghai University,Shanghai 200444,China [2]Department of Physics,Zhejiang Normal University,Jinhua 321004,China [3]Zhejiang Institute of Photoelectronics and Zhejiang Institute for Advanced Light Source,Zhejiang Normal University,Jinhua 321004,China [4]New Uzbekistan University,Mustaqillik Ave.54,Tashkent 100007,Uzbekistan

出　　处：《Chinese Physics C》2024年第1期173-183,共11页中国物理C（英文版）

基　　金：Supported by the Natural Sciences Foundation of China(11975145);Faisal Javed acknowledges(YS304023917)the Support to his Postdoctoral Fellowship at Zhejiang Normal University,China;G.Mustafa acknowledges Grant No.ZC304022919 to Support his Postdoctoral Fellowship at Zhejiang Normal University,China。

摘　　要：This study examines a recently hypothesized black hole,which is a perfect solution of metric-affine gravity with a positive cosmological constant,and its thermodynamic features as well as the Joule-Thomson expansion.We develop some thermodynamical quantities,such as volume,Gibbs free energy,and heat capacity,using the entropy and Hawking temperature.We also examine the first law of thermodynamics and thermal fluctuations,which might eliminate certain black hole instabilities.In this regard,a phase transition from unstable to stable is conceivable when the first law order corrections are present.In addition,we study the efficiency of this system as a heat engine and the effect of metric-affine gravity for the physical parameters q_(e),q_(m),κ_(s),κ_(d),and κ_(sh).Further,we study the Joule-Thomson coefficient and inversion temperature,and observe the isenthalpic curves in the Ti−Pi plane.In metric-affine gravity,a comparison is made between a van der Waals fluid and a black hole to study their similarities and differences.

关 键 词：black hole in metric-affine gravity THERMODYNAMICS Joule-Thomson expansion 

分 类 号：P145.8[天文地球—天体物理] P142.84[天文地球—天文学]