揭示了强烈相关的量子杂质系统的消散放松动态中的隐藏缩放关系
Xu Ding1, Daochi Zhang2, Hou-Dao Zhang1
1Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
The Journal of chemical physics
|November 7, 2024
概括
我们探索了扰动如何影响开放量子系统 (OQSs),使用Kondo相关的两不纯安德森模型. 发现了Kondo动力学的缩放关系,受特征能量的影响.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子信息科学 量子信息科学
- 量子动力学 量子动力学是什么?
背景情况:
- 了解强度相关的开放量子系统 (OQS) 对量子设备控制至关重要.
- 在干扰 (quenches) 下的多杂质量子系统的动态是复杂的,难以建模.
- 在多杂质系统中的Kondo效应表现出复杂的动态过程.
研究的目的:
- 为了研究两个不同的干扰对Kondo相关的两个不纯度安德森模型的消散动态的影响.
- 分析Kondo状态在突然的能量水平变化和杂质间自旋交换相互作用下的时间演变.
- 为了建立Kondo动态的扩展关系,以应对这些扰动.
主要方法:
- 采用了数值精确的等级运动方程 (HEOM) 方法.
- 在广泛的能量参数中研究了与Kondo相关的两种不纯度的安德森模型.
- 评估了依赖时间的杂质光谱函数和其他系统属性.
主要成果:
- 在研究的扰动下,确定了控制Kondo动态的现象学缩放关系.
- 证明缩放关系取决于Kondo特征能量 (TK) 和同时发生的非Kondo动态特征能量.
- 详细描述了康多邦的时间演变.
结论:
- 建立的缩放关系提供了对强烈相关的OQSs复杂动态的洞察力.
- 这些发现突出了Kondo和非Kondo能量尺度之间的相互作用,以确定系统演变.
- 这项工作为未来对量子系统动态的理论研究提供了基础.
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