香港大学-中国科学院大学 青年物理学者论坛

HKU-UCAS young physicist forum

 

本论坛由香港大学-中国科学院大学理论与计算物理联合研究所香港和北京分部共同承办。旨在促进青年物理学者互相的交流和讨论。不同于寻常的短平快形式的科学报告，我们主要集中于更为系统、全方位、由浅入深地讲解当前物理的各个前沿方向。报告人主要是目前活跃于科研一线的年轻学者。

 

This forum is hosted by the HKU-UCAS Joint Institute of Theoretical and Computational Physics at Hong Kong and Beijing. It aims to promote interchanges and discussions among young physicists. Different from ordinary scientific reports in the short, simple and quick form, we mainly focus on explaining and introducing various frontier directions of current physics in a more systematic, all-round way and from the shallower to the deeper. The speakers are mainly young scholars who are currently active in the front line of scientific research.

           

11^th forum（第十一期）

报告人简介

 

 

 

Yi-Ming Wu(吴一鸣) is currently a Moore postdoctoral scholar at Stanford University. He received his PhD degree in Physics from University of Minnesota in 2021, under the supervision of Prof. Andrey Chubukov. After that, He spent one year at Tsinghua University as a Shuimu Fellow. His research interests includes unconventional superconductivity of different kinds (such as superconductivity from non-Fermi liquids and pair density waves), 1D systems and fractional quantum Hall liquids.

 

 

 

 

 

Abstract, time and venue:

 

Bosonization study of the higher harmonic spectral properties of 1D extended Hubbard model

 

Motivated by recent ARPES experiments on doped 1D cuprates, we investigate spectral properties of a 1D extended Hubbard model with both on-site repulsion and nearest-neighbor interaction. From state-of-the-art time-dependent variational principle calculations, we find that the spectral weights of the holon-folding and  branches evolve oppositely as a function of, and a moderate attractive may best fit the experimental results, hinting the possible existence of sizable electron-phonon coupling in cuprates.

From bosonization analysis we show that this peculiar dichotomy of holon-folding and branches can be explained by a universal relation between the spectral intensity at arbitrary harmonic branches and the Luttinger parameters. We argue that the relation we established can be used for detecting different interactions in various 1D systems.

 

Date: 2023.09.27

Time: 10:00 AM (UTC+8)

Online Venue: **

Zoom Link: https://hku.zoom.us/j/97420859050

 

 

 

References:

 

1.    arXiv:2211.02031