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arXiv 1710.01005hep-thcond-mat.stat-mechcond-mat.str-el
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多体量子混沌对流体力学的约束

Constraints on hydrodynamics from many-body quantum chaos

Andrew Lucas

摘要:

相互作用的多体系统的流体力学是否从根本上受到量子力学基本原理的限制?从粘性至少和熵密度(用基本单位测量)一样大的猜想开始,人们一直在寻找这个问题的精确答案。在这项工作中,我们确定了一个简单的流体力学和多体量子混沌之间的关系,在广泛的实验可实现的系统。与量子蝴蝶效应的一致性导致了流体力学的声速和扩散常数的上限。这些界限将两种截然不同的量子多体动力学理论联系起来,澄清了经典流体力学和量子信息损失之间的关系,并提供了一种简单的方法来约束实验中的热化和量子混沌理论。

英文摘要:

Is the hydrodynamics of an interacting many-body system fundamentally limited by basic principles of quantum mechanics? Starting with the conjecture that viscosity is at least as large as entropy density (as measured in fundamental units), there has been a long search for a precise answer to this question. In this work, we identify a simple relationship between hydrodynamics and many-body quantum chaos in a broad class of experimentally realizable systems. Consistency with the quantum butterfly effect leads to upper bounds on the speed of sound and diffusion constants of hydrodynamics. These bounds link two very different theories of quantum many-body dynamics, clarify the relationship between classical hydrodynamics and quantum information loss, and provide a simple way to constrain theories of thermalization and quantum chaos 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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