赫尔姆霍兹柏林材料与能源中心的研究人员在更接近现实的量子固态模型中探测到了分形子的存在迹象 1。分形子是一种极为罕见的准粒子，其最显著的特征是流动性极其受限——单个分形子几乎无法独立移动，只能通过与其他分形子相互作用才能改变位置 1。这些粒子此前仅在高度理论化的规范场论框架中被预测，此次发现为将其从理论转化为可检测的现象迈出了重要一步 1。
量子自旋液体是晶体中一种特殊的物质状态，其中电子的磁矩即便在绝对零度也不会固定排列，而是持续波动 1。研究团队通过改进自旋相互作用的建模方式，克服了量子效应过强或过弱导致分形子消失或失去量子特性的问题 1。该研究已发表于《自然通讯》2026年第17卷第1期 1。研究人员建议采用Rydberg原子模拟器作为实验平台来进一步检测分形子 1。
Researchers at the Helmholtz Berlin Centre for Materials and Energy have identified evidence of fractons—unusual quasiparticles with extremely limited mobility—in more realistic quantum solid-state models. 1 Fractons are characterized by their nearly immobile nature, with individual fractons unable to move on their own and only capable of changing position through interactions with other fractons. 1
The team, led by Professor Johannes Reuther and Dr. Nils Niggemann, addressed a critical challenge in fracton physics by refining how spin interactions are modeled. 1 Previously, fractons had only been predicted in highly generalized gauge field theories, but quantum effects in more practical systems were either too strong or too weak, causing fractons to either disappear or lose their quantum properties. 1 By overcoming this limitation, the research establishes a pathway toward eventual experimental detection of these exotic particles. 1
The findings were published in Nature Communications Volume 17, Issue 1, 2026, with DOI: 10.1038/s41467-026-74797-0. 1
Quantum spin liquids represent an anomalous state of matter found in crystals where the magnetic moments of electrons continue to fluctuate even at absolute zero temperature, rather than becoming fixed in a regular arrangement. 1 The researchers propose using Rydberg atom simulators as the experimental platform for detecting fractons. 1
评论
还没有评论，欢迎留下第一条。