Volume 123, Number 4, August 2018
|Number of page(s)||7|
|Published online||26 September 2018|
Joule-Thomson expansion of five-dimensional Einstein-Maxwell-Gauss-Bonnet-AdS black holes
1 Department of Physics, Sripat Singh College - Jiaganj, Murshidabad-742123, India
2 Department of Mathematics, The University of Burdwan, Golapbag Academic Complex - Burdwan-713104, Purba Burdwan, West Bengal, India
Received: 27 June 2018
Accepted: 23 August 2018
We investigate the Joule-Thomson expansion for five-dimensional Einstein-Maxwell-Gauss-Bonnet-AdS black holes. Here, we derive the expressions for the Joule-Thomson coefficient μ in two different approaches and show that both of these approaches are consistent with each other. Further, we analyze both inversion and isenthalpic curves in the plane. Then we determine the cooling-heating regions. Finally, we compute the ratio between minimum inversion temperature and critical temperature Tc for the said black holes and show that this ratio has two values unlike the charged AdS black holes and van der Waals' fluids as we achieve two critical temperatures from two equations. We also show graphically as well as by computing the critical points that the Gauss-Bonnet coupling constant α can have only positive values if the black hole is small.
This paper is dedicated to Prof. Subenoy Chakraborty,
Department of Mathematics, Jadavpur University, India,
to tribute him on his 60th birth year.
PACS: 04.70.Dy – Quantum aspects of black holes, evaporation, thermodynamics / 04.70.-s – Physics of black holes
© EPLA, 2018
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