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Durham University

Department of Physics

Staff profile

Publication details for Ruth Gregory

Ahmed, Wasif, Chen, Hong Zhe, Gesteau, Elliott, Gregory, Ruth & Scoins, Andrew (2019). Conical holographic heat engines. Classical and Quantum Gravity 36(21): 214001.

Author(s) from Durham


We demonstrate that adding a conical deficit to a black hole holographic heat engine increases its efficiency; in contrast, allowing a black hole to accelerate decreases efficiency if the same average conical deficit is maintained. Adding other charges to the black hole does not change this qualitative effect. We also present a simple formula to calculate the efficiency of elliptical cycles for any black hole, which allows a more efficient numerical algorithm for computation.