Zhang Ze-Zhou, Tan Qing-Shou, Wu Wei
Key Laboratory of Quantum Theory and Applications of Ministry of Education, Lanzhou University, Lanzhou 730000, China.
Lanzhou Center for Theoretical Physics and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou 730000, China.
Phys Rev E. 2023 Jul;108(1-1):014138. doi: 10.1103/PhysRevE.108.014138.
We investigate the heat statistics in a relaxation process of quantum Brownian motion described by the Caldeira-Leggett model. By employing the normal mode transformation and the phase-space formulation approach, we can analyze the quantum heat distribution within an exactly dynamical framework beyond the traditional paradigm of Born-Markovian and weak-coupling approximations. It is revealed that the exchange fluctuation theorem for quantum heat generally breaks down in the strongly non-Markovian regime. Our results may improve the understanding about the nonequilibrium thermodynamics of open quantum systems when the usual Markovian treatment is no longer appropriate.
我们研究了由卡尔德雷拉 - 莱格特模型描述的量子布朗运动弛豫过程中的热统计。通过采用正则模变换和相空间表述方法，我们能够在超越传统玻恩 - 马尔可夫和弱耦合近似范式的精确动力学框架内分析量子热分布。结果表明，量子热的交换涨落定理在强非马尔可夫区域通常会失效。当通常的马尔可夫处理不再适当时，我们的结果可能会增进对开放量子系统非平衡热力学的理解。
