Accelerating AdS black holes as the holographic heat engines in a benchmarking scheme

TL;DR

This paper explores how accelerating AdS black holes can serve as efficient holographic heat engines, with their performance influenced by cycle size and cosmic string tension, revealing universal efficiency bounds.

Contribution

It introduces accelerating AdS black holes as a new working substance for holographic heat engines and analyzes how acceleration affects efficiency within a benchmarking scheme.

Findings

Efficiency increases with cycle size but is bounded by a universal limit.

Acceleration slightly enhances the efficiency of black hole heat engines.

Comparison shows accelerating black holes can outperform Schwarzschild-AdS black holes in efficiency.

Abstract

We investigate the properties of holographic heat engines with an uncharged accelerating non-rotating AdS black hole as the working substance in a benchmarking scheme. We find that the efficiencies of the black hole heat engines can be influenced by both the size of the benchmark circular cycle and the cosmic string tension as a thermodynamic variable. In general, the efficiency can be increased by enlarging the cycle, but is still constrained by a universal bound $2\pi/(\pi+4)$ as expected. A cross-comparison of the efficiencies of the accelerating black hole heat engines and Schwarzschild-AdS black hole heat engines suggests that the acceleration also increases the efficiency although the amount of increase is not remarkable.