Joule-Thomson expansion of the regular(Bardeen)-AdS black hole  

作　　者：Sen Guo Jin Pu Qing-Quan Jiang Xiao-Tao Zu 郭森;蒲瑾;蒋青权;祖小涛(College of Physics and Space Science,China West Normal University,Nanchong 637002,China;School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]College of Physics and Space Science,China West Normal University,Nanchong 637002,China [2]School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China

出　　处：《Chinese Physics C》2020年第3期148-154,共7页中国物理C（英文版）

基　　金：Supported by the Program for NCET-12-1060;by the Sichuan Youth Science and Technology Foundation(2011JQ0019);by FANEDD(201319);by Ten Thousand Talent Program of Sichuan Province;by Sichuan Natural Science Foundation(16ZB0178);by the starting funds of China West Normal University(17YC513,17C050)

摘　　要：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.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.

关 键 词：Joule-Thomson expansion inversion curve inversion temperature the regular(Bardeen)-AdS black hole 

分 类 号：P145.8[天文地球—天体物理]