在周期驱动系统中,接近热平衡的阻塞响应
Lennart Dabelow1,2, Peter Reimann3
1RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan.
Nature communications
|January 4, 2024
概括
时间周期性扰动会导致孤立量子系统的响应停滞. 随着系统接近热平衡,驱动效应显著减少,抑制反应.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子多体系统是一个量子多体系统.
- 统计力学 统计力学
背景情况:
- 了解系统对外部干扰的反应是物理学的基础.
- 线性响应理论对于具有许多自由度或远离平衡的复杂系统通常是不够的.
研究的目的:
- 为了研究孤立的多体量子系统对时间周期性扰动的反应.
- 分析热化或接近热平衡的系统中"停止响应"的现象.
主要方法:
- 在周期性时间驾驶下分析孤立的多体量子系统.
- 考虑从远离平衡开始的系统和接近平衡的系统.
- 互补的数值模拟,分析描述和定性论证.
主要成果:
- 在中等强度的周期性扰动下观察到一种称为"停止响应"的现象.
- 随着系统接近热平衡,驱动效应被显著抑制.
- 最初接近热平衡的系统对扰动的反应最小.
结论:
- 孤立量子系统对周期性驱动的反应强烈依赖于它们接近热平衡的程度.
- 停滞反应突出了接近平衡的系统中的动态反应的抑制,挑战了传统的响应预测.
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