【学术视频】“非厄米系统动力学演化及其拓扑性质”培训班 | 香港大学陈钢教授

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图 | 陈钢

题   目：Quantum dynamics and experimental relevances in Mott insulators报告人：陈钢单   位：香港大学时   间：2019-12-15地   点：北京计算科学研究中心

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报告摘要

In this talk, I will review the understanding of the thermal Hall transport in Mott insulators. Hall transports are intimately connected to the Berry curvature and dynamic properties of the excitation bands of the low energy quasi-particles. These relevant Mott insulators include weak Mott insulators and strong Mott insulators. For weak Mott insulators, it was known that, the strong charge fluctuations could generate non-trivial Berry curvature distributions for the fractionalized quasiparticle in the magnetic field. When the system develops magnetic orders, the magnons could have a topological band structure that would support non-trivial thermal Hall effects. Finally, we explain the origin of topological thermal Hall effect in strong Mott insulating magnets without orders.

个人简介

陈钢教授本科毕业于中国科学技术大学，获本科最高荣誉郭沫若奖，进入美国加州大学圣芭芭拉分校学习，2010年获物理学博士。2015年初加入复旦大学物理学系工作，现在香港大学物理系任职。陈钢教授主要从事强关联凝聚态的理论研究工作，在量子磁性、关联电子、巡游阻挫、拓扑材料、介观物理、超冷原子分子等方向有一些研究，对一般的多体物理系统亦有广泛的兴趣。

会议简介

The International Workshop on Frontiers in Quantum Physics and Quantum Information is a series workshop for theoretical and experimental quantum information research. This year, we focus on the topic “topology and dynamics in non-Hermitian systems”. Non-Hermitian Hamiltonians were not taken seriously in the past since they were assumed to be unphysical. With the advent of parity-time reversal symmetric systems possessing real eigenvalues and conserved probability, and with numerous experimental demonstrations, such Hamiltonians are now studied routinely as many novel features in non-Hermitian systems may or may not have any analogue in the Hermitian counterparts. Study of topological phases in non-Hermitian systems is one of the fastest growing and hot research topics. Some of the models have no direct analogy with the Hermitian counterparts and predict exotic topological phases which remained elusive in Hermitian systems but can be rather easily obtained in non-Hermitian systems. The scientific objects of the workshop are to gather widely recognized experts in the field to present and discuss groundbreaking work.

主办方：北京计算科学研究中心

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