Open quantum battery in the background of a three-dimensional rotating black hole
Year: 2026
Type: article
Abstract: We investigate the charging process of an open quantum battery coupled to a scalar field in a three-dimensional rotating black hole spacetime. We evaluate the stored energy, ergotropy, and charging power to quantify the effect of rotation on the charging performance of the quantum battery. Our results demonstrate that when the energy level spacing is smaller than the charging amplitude, rotation enhances the finite-time stored energy and charging power exclusively under the Dirichlet boundary condition; whereas, when the energy level spacing exceeds the charging amplitude, rotation suppresses the energy extracted from the vacuum fluctuations via dissipation, thereby decreasing the charging power. Furthermore, ergotropy analysis reveals that, irrespective of the ratio of the energy level spacing to the charging amplitude, rotation consistently enhances the ergotropy under the Dirichlet condition; under the transparent condition, however, this enhancement occurs only after an initial charging phase. These behaviors originate from the distinct effects of the dephasing and incoherent relaxation rates under different boundary conditions. Our findings advance the understanding of relativistic quantum thermodynamics and provide insights into selecting optimal charging environments within a rotating BTZ black hole background.
Source: Physics Letters B
Authors: Xiaofang Liu, Zehua Tian, Jieci Wang
Institutions: Hunan Normal University, Hangzhou Normal University
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7220734613