About
The Asian-Pacific Condensed Matter Physics Seminars (AP-CMP) is a series of online seminars that brings together researchers from across the Asia-Pacific region and beyond. Our goal is to foster scientific exchange and collaboration in the field of condensed matter physics.
Mailing List
Please join our public mailing list to receive the meeting information. If you have a Google account, you can join the mailing list by clicking the “Join Group” button on the Google Groups page.
If you does not have a Google account, please submit your request to a request form. Note that we will add corrected e-mail addresses regulary but not immediately. We strongly recommend you to join the mailing list using your Google account if any. If you do not receive an invitation within a few days, please check the trash folder and then contact us.
Participation Guidelines
- The Zoom meeting URL and password will be sent to your registered email address. Please do not share or forward these details.
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- To prevent audio feedback, please use headphones when asking questions.
If you are interested in organizing a seminar, please contact us through the admin email address.
Contact
For any inquiries, please contact us through the admin email address.
Organizers
- Sangkook Choi (Korea Institute for Advanced Study)
- Chia-Min Chung (National Yang Ming Chiao Tung University)
- Atsushi Hariki (Osaka Metropolitan University)
- Yi-Ping Huang (National Tsing Hua University)
- Ken Inayoshi (Saitama University)
- Seung-Sup B. Lee (Seoul National University)
- Yoshihiro Michishita (Saitama University)
- Takahiro Misawa (The University of Tokyo)
- Yuki Nagai (The University of Tokyo)
- Tsuyoshi Okubo (The University of Tokyo)
- Seishiro Ono (RIKEN)
- Robert Peters (Kyoto University)
- Tokuro Shimokawa (Okinawa Institute of Science and Technology Graduate University)
- Hiroshi Shinaoka (Saitama University)
- Kazuaki Takasan (The University of Tokyo)
- Lei Wang (Chinese Academy of Sciences)
Seminar Schedule
Seminar 1
- Date: July 15, 2025 (Tuesday) 11:00 JST-12:00 JST
- Speaker: Yantao Wu (Institute of Physics, Chinese Academy of Sciences)
Title: Accurate Gauge-Invariant Tensor Network Simulations for Abelian Lattice Gauge Theory in (2+1)D
We propose a novel tensor network method to achieve accurate and efficient simulations of Abelian lattice gauge theories (LGTs) in (2+1)D. The first key is to identify a gauge canonical form (GCF) of gauge-invariant tensor network states, which simplifies existing algorithms already for (1+1)D LGTs. The second key is to employ the GCF of projected entangled-pair state (PEPS) combining variational Monte Carlo, enabling efficient variational optimization for (2+1)D LGT ground states with gauge and matter fields. We demonstrate the versatile capability of this approach for accurate simulation of pure ℤ2, ℤ3 and ℤ4 gauge theory, odd-ℤ2 gauge theories, and ℤ2 gauge theory coupled to hard-core bosons, on square lattices up to 32×32. Our work establishes gauge-invariant PEPS as a powerful approach to simulate (2+1)D Abelian LGTs.