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arXiv 1605.07331cond-mat.stat-mechcond-mat.str-elhep-th
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可积量子系统中脱离平衡态的涌现流体动力学

Emergent hydrodynamics in integrable quantum systems out of equilibrium

Olalla A. Castro-Alvaredo, Benjamin Doyon, Takato Yoshimura

摘要:

理解强相互作用量子态的一般原理是当前理论物理的重要任务之一。随着实验进入多体量子系统的复杂动力学,开发编码涌现物理学的强大方法至关重要。到目前为止,在可积和不可积演化之间观察到的强烈二分法使得很难建立一个总体理论,特别是对于时空轮廓截然不同的传输现象。我们提出了一个研究可积系统输运的新框架:具有无穷多守恒律的流体力学。这弥合了可积和不可积量子动力学之间的概念鸿沟,并为精确研究时空轮廓提供了强有力的工具。我们将其应用到热浴之间的能量传输的描述,并提供了一个完整的描述载流非平衡稳态和过渡区的家庭模型,包括Lieb-Liniger模型的相互作用玻色气体,在实验中实现。

英文摘要:

Understanding the general principles underlying strongly interacting quantum states out of equilibrium is one of the most important tasks of current theoretical physics. With experiments accessing the intricate dynamics of many-body quantum systems, it is paramount to develop powerful methods that encode the emergent physics. Up to now, the strong dichotomy observed between integrable and non-integrable evolutions made an overarching theory difficult to build, especially for transport phenomena where space-time profiles are drastically different. We present a novel framework for studying transport in integrable systems: hydrodynamics with infinitely-many conservation laws. This bridges the conceptual gap between integrable and non-integrable quantum dynamics, and gives powerful tools for accurate studies of space-time profiles. We apply it to the description of energy transport between heat baths, and provide a full description of the current-carrying non-equilibrium steady state and the transition regions in a family of models including the Lieb-Liniger model of interacting Bose gases, realized in experiments.

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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