Joule-Thomson expansion of the regular(Bardeen)-AdS black hole |
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Authors: | Sen Guo Jin Pu Qing-Quan Jiang Xiao-Tao Zu |
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Institution: | 1. College of Physics and Space Science, China West Normal University, Nanchong 637002, China2. School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China |
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Abstract: | We study the Joule-Thomson expansion of the regular black hole in an anti-de Sitter background, and obtain the inversion temperature for the Bardeen-AdS black hole in the extended phase space. We investigate the isenthalpic and inversion curves for the Bardeen-AdS black hole in the T-P plane and find that the intersection points between them are exactly the inversion points discriminating the heating from the cooling process. The inversion curve for the regular(Bardeen)-AdS black hole is not closed and there is only a lower inversion curve, in contrast to the Van der Waals fluid. Most importantly, we find that the ratio between the minimum inversion temperature and the critical temperature for the regular(Bardeen)-AdS black hole is 0.536622, which is larger than any known ratio for the singular black hole. The large ratio for the Bardeen-AdS black hole may be due to the repulsive de Sitter core near the origin of the regular black hole. |
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Keywords: | Joule-Thomson expansion inversion curve inversion temperature the regular(Bardeen)-AdS black hole |
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