COLLOQUIUM 2023
Putting pieces into the puzzle:
Towards creating ultra quantum matter in a lab
| Speaker | Liujun Zou , John Bardeen postdoctoral fellow at the Perimeter Institute for Theoretical Physics, Canada |
| Host | Lee Ching Hua and Ho Wen Wei. |
| Date/Time | Wednesday, 17 May 2023, 9:00 AM |
| Venue | via Zoom, click here to register |
Abstract
The phase diagrams of many strongly interacting quantum materials are puzzling, and various theories have been proposed to understand different pieces in each phase diagram. However, there can be intrinsic incompatibility between a seemingly valid theory and a quantum material. In this talk, I will discuss a systematic approach to understand whether a theory can be realized in a quantum material, based on the notion of quantum anomaly. I will apply this framework to examine which lattice systems can realize Stiefel liquids, a class of interesting quantum spin liquids. These results pave the way towards creating this ultra quantum matter in a lab.
Biography
Liujun Zou received his PhD degree in physics at Harvard University in 2019, supervised by T. Senthil (from MIT). Since 2019, he has been the John Bardeen postdoctoral fellow at the Perimeter Institute for Theoretical Physics. He is broadly interested in quantum condensed matter, and the theme of his research is about universal physics in quantum matter. He has done works ranging from magic-angle twisted bilayer graphene, exotic quantum criticality, topological phases, quantum spin liquids, non-Fermi liquids, quantum anomaly and non-equilibrium quantum dynamics. With an interdisciplinary research style, he often applies techniques from quantum field theory and quantum information to study quantum matter, and some of his works also result in new insights into these other areas.