普遍性(动力系统)
物理
激发态
重整化群
基态
渡线
量子
随机性
密度矩阵重整化群
量子力学
统计物理学
量子系统
缩放比例
数学
统计
人工智能
计算机科学
几何学
作者
Bongsoon Kang,Andrew C. Potter,Romain Vasseur
出处
期刊:Physical review
日期:2017-01-19
卷期号:95 (2)
被引量:9
标识
DOI:10.1103/physrevb.95.024205
摘要
We study the nonequilibrium properties of a nonergodic random quantum chain in which highly excited eigenstates exhibit critical properties usually associated with quantum critical ground states. The ground state and excited states of this system belong to different universality classes, characterized by infinite-randomness quantum critical behavior. Using strong-disorder renormalization group techniques, we show that the crossover between the zero and finite energy density regimes is universal. We analytically derive a flow equation describing the unitary dynamics of this isolated system at finite energy density from which we obtain universal scaling functions along the crossover.
科研通智能强力驱动
Strongly Powered by AbleSci AI