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arXiv 2408.04280cond-mat.stat-mechquant-ph
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有限时间热力学权衡关系中的对称性诱导增强

Symmetry induced enhancement in finite-time thermodynamic trade-off relations

Ken Funo, Hiroyasu Tajima

AI总结:

本文建立了基于对称性的通用框架,通过推导平均跳跃率的上界,刻画有限时间热力学中集体增强的基本极限,并构造了超越传统超辐射模型的开放量子系统。

摘要:

对称性对开放量子系统施加约束,影响非平衡过程中的耗散性质。超辐射是一个典型例子,其中系统的衰减率通过尊重置换对称性的集体系统-浴耦合而得到增强。此类模型也被应用于热机。然而,一个处理有限时间热力学中对称性影响的通用框架尚未很好地建立。在此,我们展示了一个基于对称性的框架,该框架描述了有限时间热力学中集体增强的基本极限。具体而言,我们推导出平均跳跃率的一个通用上界,该上界量化了由热力学速度极限和权衡关系所设定的基本速度。我们确定了达到所获上界的对称性条件,并明确构造了一个超越传统超辐射模型所实现的增强的开放量子系统模型。

英文摘要:

Symmetry imposes constraints on open quantum systems, affecting the dissipative properties in nonequilibrium processes. Superradiance is a typical example in which the decay rate of the system is enhanced via a collective system-bath coupling that respects permutation symmetry. Such model has also been applied to heat engines. However, a generic framework that addresses the impact of symmetry in finite-time thermodynamics is not well established. Here, we show a symmetry-based framework that describes the fundamental limit of collective enhancement in finite-time thermodynamics. Specifically, we derive a general upper bound on the average jump rate, which quantifies the fundamental speed set by thermodynamic speed limits and trade-off relations. We identify the symmetry condition which achieves the obtained bound, and explicitly construct an open quantum system model that goes beyond the enhancement realized by the conventional superradiance model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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