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arXiv · 2508.09712

Joule-Thomson expansion and heat engine efficiency of charged rotating black strings

Hamid R. Bakhtiarizadeh
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Abstract

We perform the first study of the throttling process and heat engine efficiency of asymptotically Anti-de Sitter charged and rotating black strings in the extended phase space. For the throttling process, we calculate the Joule-Thomson coefficient and inversion temperature. We also depict the inversion and isenthalpic curves in the temperature-pressure plane, thereby identifying the corresponding cooling and heating regions. For the black string heat engine, we obtain analytical expressions for the efficiency of the Carnot and rectangular engine cycles and draw their diagrams in terms of some relevant thermodynamics variables.

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Hamid R. Bakhtiarizadeh. 2025-08-13. Joule-Thomson expansion and heat engine efficiency of charged rotating black strings. https://arxiv.org/abs/2508.09712

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