量子表示选择中性斯格明子分子
Quantum Representation Selects Neutral Skyrmion Molecules
- Mandelstam Institute for Theoretical Physics, School of Physics, University of the Witwatersrand（威特沃特斯兰德大学物理学院曼德尔斯坦理论物理研究所）
- National Institute for Theoretical and Computational Sciences（南非理论与计算科学国家研究所）
机构由 AI 辅助整理，请以论文原文为准。
中文总结 AI 辅助
该研究通过两种SU(3)磁性模型证明，局部量子态决定斯格明子分子抵消陀螺力的组成（从对变为三聚体），且中性三聚体在平均场下稳定，可短距离平移。\n
中文摘要 AI 辅助
斯格明子在运动时会受到侧向陀螺力。束缚的分子可以抵消这种力；我们称其为陀螺中性分子。我们表明，磁体上每个位点可用的量子态决定了抵消所需的组成。在两种SU(3)磁性模型中，这种组成从一对变为三聚体。两种模型对其共同经典序参数的每种构型赋予完全相同的能量，从而隔离了局部量子态的影响。当中子分子允许额外的局部态时，它们也可以解绕。然而，平均场计算发现两种组成都是束缚且局部稳定的，其中中性三聚体在采样的相互作用变化中幸存。比较它们的运动揭示了改变的抵消规则，制备的中性分子在短距离内平移时变形很小。
英文摘要
Skyrmions experience a sideways gyroscopic force when they move. Bound molecules can cancel this force; we call them gyroscopically neutral. We show that the quantum states available on each site of a magnet select the composition needed for cancellation. In two models of $SU(3)$ magnetism, this composition changes from a pair to a trimer. Both models assign exactly the same energy to every configuration of their common classical order parameter, isolating the effect of the local quantum states. Neutral molecules can also unwind when additional local states are allowed. Mean field calculations nevertheless find both compositions bound and locally stable, with the neutral trimer surviving sampled interaction changes. Comparing their motion reveals the changed cancellation rule, and prepared neutral molecules translate over short distances with little deformation.
