Department of Physics, National University of Singapore
Condensed Matter Seminar Series
To receive email notifications of this seminar series, please send an email to zouliujun@gmail.com to request.
Condensed Matter Seminar Series
To receive email notifications of this seminar series, please send an email to zouliujun@gmail.com to request.
Upcoming Seminars
(Both online and in-person seminars will be broadcast via Zoom.)
(Click the upper right corner of this page to see the previous seminars and their recordings.)
Time: 9am, August 21 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Shang Liu
Title: Constructing bulk topological orders via layered gauging
Abstract: Understanding quantum phases and phase transitions in the presence of symmetries is a central objective of quantum many-body physics. A powerful modern paradigm for investigating this problem is topological holography, which relates symmetries in k dimensions to "bulk'' topological orders in (k+1) dimensions. While conceptually profound, most existing bulk construction methods rely on sophisticated mathematical formalisms and can be difficult to apply to certain symmetry types. In this work, we propose a physically intuitive and versatile method, termed the layered gauging construction, to systematically generate (k+1)-dimensional (liquid or fracton) topological orders from k-dimensional generalized symmetries. Roughly speaking, the prescription is to stack many layers of k-dimensional quantum systems with certain symmetries into a (k+1)-dimensional pile, and then sequentially gauge a diagonal symmetry acting on each nearest-neighbor pair of layers. The detailed procedure depends on the specific symmetry types. From a quantum-error-correction perspective, our layered gauging construction may be viewed as a generalization of the hypergraph-product construction beyond the standard CSS setting.Â
Time: 9am, August 28 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Jinmin Yi
Title: TBD
Abstract: TBD
Time: 11am, September 4 2026, GMT+8
Location: S11-02-07 at NUS
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Zhicheng Yang
Title: TBD
Abstract: TBD
Time: 9am, September 11 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Zhengyan Darius Shi
Title: TBD
Abstract: TBD
Time: 9am, September 18 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Guo-Yi Zhu
Title: TBD
Abstract: TBD
Time: 9am, October 2 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Lei Gioia
Title: TBD
Abstract: TBD
Time: 9am, October 16 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Rahul Sahay
Title: TBD
Abstract: TBD
Time: 9am, October 23 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Ruizhi Liu
Title: TBD
Abstract: TBD
Time: 9am, October 30 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Jacob Zavatone-Veth
Title: TBD
Abstract: TBD
Time: 9am, November 6 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Gautam Greddy
Title: TBD
Abstract: TBD
Time: 9am, November 13 2026, GMT+8
Location: Online
Zoom: https://nus-sg.zoom.us/j/88911975409?pwd=ixb7zXPuROkgclFcXZ2Wzh5vx6fmz4.1
Password: 835700
Speaker: Linhao Li
Title: TBD
Abstract: TBD
The seminar series in the fall semester of 2026 is over, and the next seminar will take place in the spring semester of 2027.