经典方法在混合系统中平衡时间外的有序相关系数
Tomás Notenson1, Ignacio García-Mata2, Augusto J Roncaglia1
1Departamento de Física "J. J. Giambiagi" and IFIBA, FCEyN, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina.
Physical review. E
|July 19, 2023
概括
超时有序相关因子 (OTOC) 测量了量子信息杂乱. 这项研究表明,一般化的古典共振控制了混合动力学系统中的OTOC放松,扩展了混乱理论.
科学领域:
- 这是量子混沌.
- 统计力学 统计力学
- 动态系统 动态系统
背景情况:
- 时间外有序相关因子 (OTOC) 量化了量子信息杂乱.
- 杂乱是混乱系统的一个关键特征,使OTOC成为混乱的常见衡量标准.
- 短期的OTOC增长与利亚普诺夫指数 (蝶效应) 有关.
研究的目的:
- 扩大对OTOC动态的理解,超越完全混乱的系统.
- 在表现出混合动态的系统中研究OTOC放松.
- 在更一般的系统中确定OTOC平衡的指导原则.
主要方法:
- 使用标准地图作为具有混合动态的模型系统.
- 分析OTOC随着时间的推移的行为.
- 将OTOC放松率与经典共振结构进行比较.
主要成果:
- 证明混合系统中OTOC放松到平衡不仅仅是指数式的.
- 确定了一般化的古典共振作为决定OTOC放松速度的关键因素.
- 展示了共振理论对超越纯粹混乱的系统的适用性.
结论:
- 在混合动力系统中,OTOC的放松动态受一般化古典共振的支配.
- 这项工作扩大了共振理论在理解量子信息杂乱方面的应用.
- 研究结果为研究各种动态系统中的混乱和混提供了更全面的框架.
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