报告时间：2021年7月24日13:30-15:30

报告地点：阶四教室

讲座人：谢志远

报告摘要：In this talk, I will briefly talk about the tensor renormalization group method, especially the nested tensor network method and automatic differentiation version of second renormalization group. And then I will talk about some applications, such as Kagome spin liquid, AF Heisenberg model on triangular lattice, Shastry-Sutherland model, and perhaps also the nonuniform spin liquid on honeycomb lattice, if time permits.

个人简介：

2012年9月-2015年9月 中国科学院物理研究所，凝聚态理论与材料计算实验室，博士后
2015年10月至今 中国人民大学，物理系，副教授
研究兴趣:
1.基于数值重正化群的多体计算方法，及其在强关联、相变与临界系统中的应用
2.低维量子磁性系统，如自旋液体与新奇的拓扑量子态等
3.高温超导的微观机制
4.自旋玻璃与无序系统

主要工作和成果:
1.Ground state degeneracy of interacting spinless fermions,
Z. C. Wei, X. J. Han, Z. Y. Xie, and T. Xiang, Phys. Rev. B 92, 161105(2015),Rapid Communication.
2.Tensor renormalization of quantum many-body systems using projected entangled simplex states,
Z. Y. Xie, J. Chen, J. F. Yu, X. Kong, B. Normand, and T. Xiang, Phys. Rev. X 4, 011025(2014).
3.Tensor renormalization group study of classical XY model on the square lattice,
J. F. Yu, Z. Y. Xie, Y. Meurice, Y. Z. Liu, A. Denbleyker, H. Y. Zou, M. P. Qin, J. Chen, and T. Xiang, Phys. Rev. E 89, 013308(2014).
4.Partial long-range order in antiferromagnetic Potts models,
M. P. Qin, Q. N. Chen, Z. Y. Xie, J. Chen, J. F. Yu, H. H. Zhao, B. Normand, and T. Xiang, Phys. Rev. B 90, 144424(2014).
5.Controlling sign problems in spin models using tensor renormalization,