论文标题
在$ s = 1 $ HEISENBERG抗铁磁链中，拓扑霍尔丹式的动力旋转激发带有单离子各向异性
Dynamical spin excitations of topological Haldane gapped phase in the $S=1$ Heisenberg antiferromagnetic chain with single-ion anisotropy
论文作者
论文摘要
我们通过使用量子蒙特卡洛模拟和假想时间相关功能的随机分析延续，研究了一维$ s = 1 $ s = 1 $ heisenberg抗铁磁链的动力自旋激发。使用横向动态自旋结构因子，我们观察到尺寸相变的量子相变，其拓扑霍尔丹烷间隙相位与琐碎相之间的临界点。在量子临界点，我们发现一个宽阔的连续体，其特征是tomonaga-luttinger液体类似于$ s = 1/2 $ heisenberg抗fiferromagnetic链。我们进一步确定基本激发是分数化的蜘蛛。
We study the dynamical spin excitations of the one-dimensional $S=1$ Heisenberg antiferromagnetic chain with single-ion anisotropy by using quantum Monte Carlo simulations and stochastic analytic continuation of imaginary-time correlation function. Using the transverse dynamic spin structure factor, we observe the quantum phase transition with a critical point between the topological Haldane gapped phase and the trivial phase. At the quantum critical point, we find a broad continuum characterized by the Tomonaga-Luttinger liquid similar to a $S=1/2$ Heisenberg antiferromagnetic chain. We further identify that the elementary excitations are fractionalized spinons.
