禁闭：实时可视化
Confinement: a real-time visualization
摘要：
由于量子色动力学中已知的限制机制，很难观察到携带分数量子数的单个粒子（例如带有分数电荷的夸克）。一个凝聚态粒子的例子是准一维自旋系统中的自旋子，它是携带自旋1/2的尼尔配置背景下的畴壁。利用时间演化的块抽取算法，我们可视化的非平凡畴壁动力学的限制机制引起的双腿自旋1/2阶梯。它可以用一个简单的单粒子布洛赫振荡图像来说明，不仅定性，而且定量。我们提出了$^{87}$ Rb超冷玻色子系统畴壁动力学的实验实现和实时探测。
英文摘要：
Due to the mechanism of confinement, as known from quantum chromodynamics, it is difficult to observe individual particles carrying fractional quantum number (e.g. quark with fractional electric charge). A condensed matter example of fractionalized particles is spinons in quasi-one-dimensional spin systems, which are domain walls in the background of Neel configurations carrying spin-1/2. Using the time-evolving block decimation algorithm, we visualize the nontrivial domain wall dynamics induced by the confine mechanism in a two-leg spin-1/2 ladder. It can be illustrated by a simple single-particle picture of Bloch oscillation, not only qualitatively but also quantitatively. We propose the experimental realization and the real time detection of the domain wall dynamics in the ultra-cold boson systems of $^{87}$Rb.
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