Quantifying the flow of energy within and through fluctuating nanoscale systems poses a significant challenge to understanding microscopic biological machines. A common approach involves coarse-graining, which allows a simplified description of such systems. This has the side effect of inducing so-called hidden contributions (due to sub-resolution dynamics) that complicate the resulting thermodynamics. Here we develop a thermodynamically consistent theory describing the nonequilibrium excess power internal to autonomous systems, and introduce a phenomenological framework to quantify the hidden excess power associated with their operation. We confirm our theoretical predictions in numerical simulations of a minimal model for both a molecular transport motor and a rotary motor.
Fluctuation theorem for the renormalized entropy change in the strongly nonlinear nonequilibrium regime
推广了最近的一项工作[T. Taniguchi和E. G. D. Cohen，J. Stat. Phys.126，1（2006）]，考虑了宏观热力学量的非线性弛豫过程。结果表明，在非线性非平衡态下，如果适当地重整化以局部平衡态为特征的熵的变化，则涨落定理成立。在线性近平衡情形下恢复了常熵变的涨落定理。这一结果表明，在强非线性非平衡状态下，信息论熵的香农形式可能会被修改。
Universal approach to quantum thermodynamics of strongly coupled systems under nonequilibrium conditions and external driving
提出了一种基于密度矩阵展开的方法来研究强耦合到两个或多个电解池的量子系统的热力学性质。对于缓慢的外部驱动系统，我们确定的绝热和非绝热贡献的热力学量，我们展示了如何热力学的第一和第二热力学定律表现在强耦合制度。特别是，我们表明，熵产生是积极的二阶驱动速度。该公式可用于玻色子和费米系统，并恢复了平衡情况下的先前结果（Phys. Rev. B 98，134306 [2018]）。然后，该方法被证明为驱动共振能级模型以及驱动安德森杂质模型，其中的分层量子主方程方法被用来精确地模拟非平衡量子动力学。
Nonequilibrium full counting statistics of multicomponent strongly-interacting quantum gases with defects
Institute for Space Sciences（空间科学研究所）；London Institute for Mathematical Sciences, Royal Institution（伦敦数学科学研究所，皇家学会）；Department of Physics, University of Oradea（奥拉迪亚大学物理系）；Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics（布达佩斯技术与经济大学物理学院理论物理系）；MTA-BME Lendület “Momentum” Open Quantum Systems Research Group, Budapest University of Technology and Economics（布达佩斯技术与经济大学 MTA-BME 领导力“动量”开放量子系统研究组）
