论文标题
在远程相互作用的量子旋转链中的动力强子形成
Dynamical hadron formation in long-range interacting quantum spin chains
论文作者
论文摘要
近年来，对量子自旋链中的限制研究引起了人们的兴趣。这不仅对于理解一系列有效的一维冷凝物质实现非常重要，而且还与量子染色体动力学（QCD）共享一些非扰动物理学，这使其成为当前量子模拟工作的主要目标。与QCD相比，这些模型中出现的约束诱导的两粒子界限被称为介子。在这里，我们研究了在量子自旋链中具有远距离相互作用的量子碰撞引起的散射事件，使两个介子具有扩展相互作用。我们展示了新颖的野蛮界限，例如具有类似于四夸克的四个组成粒子，在融合事件中可能会动态形成。在自然的碰撞中，由于弹性介子散射占主导地位，它们的信号很弱。但是，我们提出了两个可控的方案，可以清楚地观察动态强体形成。我们讨论如何在被困的离子或rydberg原子设置中模拟这种物理。
The study of confinement in quantum spin chains has seen a large surge of interest in recent years. It is not only important for understanding a range of effective one-dimensional condensed matter realizations, but also shares some of the non-perturbative physics with quantum chromodynamics (QCD) which makes it a prime target for current quantum simulation efforts. In analogy with QCD, the confinement-induced two-particle boundstates that appear in these models are dubbed mesons. Here, we study scattering events due to meson collisions in a quantum spin chain with long-range interactions such that two mesons have an extended interaction. We show how novel hadronic boundstates, e.g. with four constituent particles akin to tetraquarks, may form dynamically in fusion events. In a natural collision their signal is weak as elastic meson scattering dominates. However, we propose two controllable protocols which allow for a clear observation of dynamical hadron formation. We discuss how this physics can be simulated in trapped ion or Rydberg atom set-ups.
