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Exotic phenomena in Dirac systems

Exotic phenomena in Dirac systems
Date & Time
April 27, 2023 (Thursday) | 15:30-17:30
Venue
CPD - LG.10 (Central Podium Levels), Centennial Campus, HKU
Speaker
Professor Fakher Assaad
Theoretische Physik I Julius-Maximilians-Universitaet Würzburg, Germany

Exotic phenomena in Dirac systems
 
The Dirac vacuum provides a golden route to generate models with exotic quantum phase transitions. In this lecture, Professor Fakher Assaad will review work on a model of Dirac fermions that exhibit quantum spin-Hall and superconducting phases, and that realizes the notion of skymion superconductivity. The relation of this model to theories of magic angle twisted bilayer graphene, as well as to O(5) non-linear sigma models with Wess-Zumino-Witten terms will be discussed. 

 

Professor Fakher Assaad

Speaker Professor Fakher Assaad

Theoretische Physik I Julius-Maximilians-Universitaet Würzburg, Germany

Professor Assaad receive his PhD in Physics at the ETH Zürich in 1991. He worked as postdoctoral fellow at University of Würzburg from 1991-1993, University of Tokyo from 1994-1995, University of California, and Santa-Barbara at 1996-1997. He started his assistant position at the university of Stuttgart in 1997 and worked as Heisenberg fellow from 2001-2003. He then worked as professor (C3) at the University of Würzburg from 2003. In 2009, he became co-spokesman of the research unit FOR1162, Electron induced phenomena in surfaces and interfaces with tunable interactions and spokesman of the research unit FOR1807, Advanced Computational Methods for Strongly Correlated Quantum Systems, in 2011. His project proposal for computational resources was awarded the John von Neumann Exzellenz-Projekt 2012 prize. His research interest includes: computational quantum many body physics, strongly correlated electron systems, and development and investigation of numerical tools.