论文标题
在孔掺杂的抗fiferromagnets中的挫败感
Fractons from frustration in hole-doped antiferromagnets
论文作者
论文摘要
关于张量规理论的最新理论研究导致发现了一种被称为Fractons的外来类型的准粒子，这些粒子均遵守电荷和偶极子的保护。在这里，我们描述了在现实系统中偶极保护法的物理实施。我们表明，在孔掺杂的抗铁磁铁中发现了天然实现。在那里，单个孔在很大程度上是不动的，而偶极孔对轻松移动。首先，我们证明了在孔掺杂的二维Ising抗fiferromagnets中，通过扰动理论中的五个顺序可行的二维ISANTIMINION ISINIS ANTANTANTENS行为的广泛参数状态。然后，我们专门针对限制在原本二维抗磁磁背景的孔的情况下，可以通过在实验中的外部场应用来实现，并证明了理想的分裂行为。我们将模型明确地映射到具有偶极矩保护的Fracton Hamiltonian上。这些系统中分形的表现包括孔的重力聚类。我们还讨论了分形式行为的诊断，我们认为这是现有的实验结果所证实的。
Recent theoretical research on tensor gauge theories led to the discovery of an exotic type of quasiparticles, dubbed fractons, that obey both charge and dipole conservation. Here we describe physical implementation of dipole conservation laws in realistic systems. We show that fractons find a natural realization in hole-doped antiferromagnets. There, individual holes are largely immobile, while dipolar hole pairs move with ease. First, we demonstrate a broad parametric regime of fracton behavior in hole-doped two-dimensional Ising antiferromagnets viable through five orders in perturbation theory. We then specialize to the case of holes confined to one dimension in an otherwise two-dimensional antiferromagnetic background, which can be realized via the application of external fields in experiments, and prove ideal fracton behavior. We explicitly map the model onto a fracton Hamiltonian featuring conservation of dipole moment. Manifestations of fractonicity in these systems include gravitational clustering of holes. We also discuss diagnostics of fracton behavior, which we argue is borne out in existing experimental results.
