宏观量子状态和普遍相关性在一个无序-顺序接口中,在1D基态上传播
Vanja Marić1, Florent Ferro1, Maurizio Fagotti1
1Université Paris-Saclay, CNRS, LPTMS, 91405, Orsay, France.
Physical review letters
|June 27, 2025
概括
在量子自旋链中,自发地破坏对称性会导致秩序. 当分离的部分重新连接时,顺序参数与时间一起缩放为t^{1/3},在接口中揭示量子效应.
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:
- 研究具有局部相互作用的转化不变量子自旋-1/2链.
- 专注于具有离散对称性的系统,在零温度下自发地断裂.
- 考虑试验场景,涉及系统部件的脱和重新合.
研究的目的:
- 在重新合后,研究量子自旋链中对称性破裂的动态.
- 为了确定顺序参数和界面区域的波动的缩放行为.
- 探索量子力学在集群分解的分解中的作用.
主要方法:
- 集成量子自旋系统的理论分析.
- 使用横场Ising链的案例研究.
- 分析歪曲信息以探测量子贡献.
主要成果:
- 在最大准粒子速度下,分离有序和无序区域的前面退缩.
- 顺序参数和波动表现出t^{1/3} 顺序的普遍亚扩散缩放.
- 接口区域显示了全范围的相关性,表明了一个宏观的量子状态.
结论:
- 在这样的量子系统中,对称性破裂的动力学受普遍的缩放定律的支配.
- 在界面区域的集群分解的分解具有显著的量子贡献.
- 接口中的子系统存在于集体宏观量子状态.
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