意大利贵宾会

Tensor Network States and Parton Wave Functions for Quantum Magnets

来源:意大利贵宾会
报告题目   Tensor Network States and Parton Wave Functions for Quantum Magnets
报告人   吴英海 副教授
报告人单位   华中科技大学
报告时间   2020-12-16 10:00:00
报告地点   意大利贵宾会物质科研B楼B0902会议室
主办单位   意大利贵宾会、国际功能材料量子设计中心(ICQD)
报告介绍

报告摘要:

  Tensor network states and parton wave functions are two pivotal methods for studying quantum magnets. In this talk, we demonstrate that a variety of parton wave functions, such as projected Fermi sea and projected fermionic or bosonic paired states, can be represented exactly as tensor networks. The results can be compressed into matrix product states with moderate bond dimensions so various physical quantities can be computed efficiently. For the projected Fermi sea, we develop an excellent compression scheme with high fidelity using maximally localized Wannier orbitals. Numerical calculations on two parton wave functions demonstrate that our method exceeds commonly adopted Monte Carlo methods in some aspects. It produces energy and correlation function with very high accuracy that is difficult to achieve using Monte Carlo method. The entanglement measures that were almost impossible to compute before can also be obtained easily using our method.


报告人简介:

  吴英海,男,2009年毕业于中国科学技术大学近代物理系获得学士学位,2014年毕业于美国宾夕法尼亚州立大学获得博士学位。2014-2017年在德国马普量子光学所理论组从事博士后研究工作。2017年8月至今为华中科技大学物理学院副教授。主要从事拓扑物态和强关联量子系统的研究,特别是分数量子霍尔效应、自旋液体、量子杂质问题等。在Phys. Rev. Lett., Nano Lett. Phys. Rev. B等期刊发表论文20余篇。

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