离散时间晶体的热力学与保护
Thermodynamics and Protection of Discrete-Time Crystals
AI总结：
本文对耦合热浴的一维自旋链中的离散时间晶体进行热力学分析，发现环境噪声致其衰减，但周期性测量可稳定次谐波振荡，为实验保护提供策略。
摘要：
离散时间晶体（DTC）是一种非平衡物质相，其特征是在周期性驱动的量子系统中时间平移对称性的破缺。在本工作中，我们对耦合到热浴的一维自旋-1/2链中的DTC进行了详细的热力学分析。我们从微观模型推导出主方程，并探讨了关键热力学量，如功、热和熵产生。我们的结果表明，DTC特征在环境噪声存在下不可避免地衰减，但我们证明周期性测量方案可以减轻退相干效应，在较长时间内稳定DTC的次谐波振荡。这些发现为时间晶体相的鲁棒性提供了见解，并为在实验环境中保护它们提供了潜在策略。
英文摘要：
Discrete-Time Crystals (DTC) are a non-equilibrium phase of matter characterized by the breaking of time-translation symmetry in periodically driven quantum systems. In this work, we present a detailed thermodynamic analysis of a DTC in a one-dimensional spin-1/2 chain coupled to a thermal bath. We derive a master equation from the microscopic model, and we explore key thermodynamic quantities, such as work, heat, and entropy production. Our results reveal that the DTC signature inevitably decays in the presence of environmental noise, but we show that a periodic measurement scheme can mitigate the effects of decoherence, stabilizing the subharmonic oscillations of the DTC for extended periods. These findings provide insights into the robustness of time-crystalline phases and potential strategies for protecting them in experimental settings.
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。
