题目：Novel signstructure of doped Mott insulators and its emergent physical consequences inthe cuprate

报告人：翁征宇清华大学高等研究院

地点：教十二―201

时间： 12月27日，周五，15:30-17:30

摘要

How tomathematically characterize strongly correlated many-body electrons is one ofthe most challenging issues of condensed matter physics. Doped Mott insulatoris a typical strongly correlated electron system which may also be responsiblefor the high-Tc superconductivity in the cuprate. I will first discuss a neworganizing principle for the doped Mott insulator based on a novel non-Fermisign structure of the t-J model and its key many-body quantum mechanicsconsequences in comparison with numerical experiments, including the exactdiagonalization and density matrix renormalization group results.In the second part of talk, I will discussthe Fermi arc, two-gap structure, quasiparticle weights in nodal and antinodalregimes, peak-hump-dip in EDC and their doping dependence observed by the ARPESexperiment in the high-Tc cuprate as the emergent pseudogap phenomenon due tothe hidden sign structure.

个人简介

翁征宇，清华大学教授。1987年于中国科大获博士学位。在德州超导中心任研究职位多年。2001年加入清华大学高等研究院。现在主要研究兴趣与方向：凝聚态理论尤其是强关联物理的研究，量子多体系统的emergent物理现象研究与高温超导机理探索。

欢迎老师和同学参加！