Partial breakdown of quantum thermalization in a Hubbard-like model
Partial breakdown of quantum thermalization in a Hubbard-like model
复制标题
类哈伯德模型中量子热化的部分分解
DOI：
10.1103/physrevb.95.054204
复制
发表时间：
2016
影响因子：
3.7
通讯作者：
M. Fisher
中科院分区：
文献类型：
--
作者：
J. Garrison;R. Mishmash;M. Fisher
我们研究了具有自旋和电荷自由度的一维链上无无序流动电子模型中量子热化的可能击穿。该模型的特征态在纠缠熵中表现出特殊的性质，在对系统进行局部、地点测量后，其明显的缩放从“体积定律”修改为“面积定律”。这些特性和其他特性表明，该模型实现了一种新的、非热的物质相，即量子解纠缠液体（QDL）。这个相的假定存在对量子统计力学的基础具有显著的影响。
We study the possible breakdown of quantum thermalization in a model of itinerant electrons on a one-dimensional chain without disorder, with both spin and charge degrees of freedom. The eigenstates of this model exhibit peculiar properties in the entanglement entropy, the apparent scaling of which is modified from a "volume law" to an "area law" after performing a partial, site-wise measurement on the system. These properties and others suggest that this model realizes a new, non-thermal phase of matter, known as a quantum disentangled liquid (QDL). The putative existence of this phase has striking implications for the foundations of quantum statistical mechanics.