物理学报2012，Vol.61Issue(21)：70-76,7.
应用多尺度纠缠重整化算法研究量子白旋系统的量子相变和基态纠缠
Quantum phase transition and ground state entanglement of the quantum spin system: a MERA study
摘要
Abstract
We use the multi-scale entanglement reorganization ansatz algorithm to simulate the spin 1/2 quantum XYX model and determine its ground-state phase diagram and entanglement phase diagram by using local order parameter and characterizing quantum entanglement: one-tangle, concurrence, and entanglement ratio R. We find that the information in entanglement phase diagram is more than in ground-state phase diagram. In addition, we extract the critical exponents β and ν from the numerical data near critical point.关键词
量子纠缠/多尺度纠缠重整化/量子相变/临界指数Key words
quantum entanglement/multi-scale entanglement reorganization ansatz/quantum phase transitions/critical exponent分类
数理科学引用本文复制引用
赵建辉,王海涛..应用多尺度纠缠重整化算法研究量子白旋系统的量子相变和基态纠缠[J].物理学报,2012,61(21):70-76,7.基金项目
重庆市博士后科研项目,(批准号：渝XM201103019)资助的课题. （批准号：渝XM201103019）
