Due to unforeseeable circumstances, the seminar had to be canceled at short notice.

CASUS Institute Seminar, Kun Chen, PhD, Flatiron Research Fellow, Flatiron Institute, Center for Computational Quantum Physics, New York City, USA

Kun joined the Flatiron Institute in 2020 as a Flatiron Research Fellow in the Center for Computational Quantum Physics. His research is focused on the development of new concepts and algorithms to study the emergent phenomena in quantum material. Previously, Kun was a Simons Research Fellow at Rutgers University. He received his PhD from the University of Massachusetts at Amherst and USTC in 2018.

Abstract of the talk// In this talk, Kun will employ a systematic quantum field theory (QFT) originating from particle physics to tackle the fundamental problems in electronic structure and superconductivity. Kun is presenting a multiloop renormalized QFT method for examining electron liquid in metals, unveiling intricate electron self-energy and interaction details crucial for advancing ab-initio techniques. Building on the knowledge gained from the QFT, Kun and his colleagues investigate high-temperature Cooper-pair correlations in (semi)metals and identify remarkable beyond-mean-field effects. These insights enable efficient probing of ultralow temperature superconductors through normal state measurements.

The seminar will be held exclusively online via Zoom Inc., people interested in the topic have the chance to also join the talk remotely. Please ask for the login details via contact@casus.science.