Groundstate fidelity phase diagram of the fully anisotropic two-leg spin-1/2 XXZ ladder
Groundstate fidelity phase diagram of the fully anisotropic two-leg spin-1/2 XXZ ladder
复制标题
全各向异性两腿自旋 1/2 XXZ 梯子的基态保真度相图
DOI：
10.1088/1367-2630/aa8bce
复制
发表时间：
2017
影响因子：
3.3
通讯作者：
Huan-Qiang Zhou
中科院分区：
文献类型：
--
作者：
sheng-hao Li;Qian-Qian Shi;Murray T Batchelor;Huan-Qiang Zhou
XXZladder model is studied in terms of an algorithm based on the tensor network (TN) representation of quantum many-body states as an adaptation of projected entangled pair states to the geometry of translationally invariant infinite-size quantum spin ladders. The TN algorithm provides an effective method to generate the groundstate wave function, which allows computation of the groundstatefidelity per lattice site, a universal marker to detect phase transitions in quantum many-body systems. The groundstatefidelity is used in conjunction with local order and string order parameters to systematically map out the groundstate phase diagram of the ladder model. The phase diagram exhibits a rich diversity of quantum phases. These are the ferromagnetic, stripe ferromagnetic, rung singlet, rung triplet, Néel, stripe Néel and Haldane phases, along with the twoXYphasesXY1 andXY2.
