Theoretical studies of topological phases of matter

April 4-6, 2023

International Institute for Advanced Studies, Kyoto, Japan

Organized by

Akira Furusaki  

Yasuyuki Kawahigashi  

Masatoshi Sato

Invited Speakers

Yu-An Chen

Chen Fang

Ryohei Kobayashi  

Shuichi Murakami

Yoshiko Ogata

Masaki Oshikawa

Ken Shiozaki

Jeffrey Teo

Zhenghan Wang*  

Haruki Watanabe  

Xiao-Gang Wen*

Mayuko Yamashita  

* indicates two lectures each.
Tuesday, April 4
9:30-10:30 Xiao-Gang Wen From the algebra of local symmetric operators to braided fusion category -- symmetry as a shadow of topological order
10:45-11:45 Ken Shiozaki An approach to higher Berry curvature using matrix product states
13:30-14:30 Yoshiko Ogata Operator algebraic approach to topological phases
14:45-15:45 Mayuko Yamashita Anderson self-duality of topological modular forms and heterotic string theory
16:00-17:00 Shuichi Murakami Fractional quantized corner charges in 2D and 3D obstructed atomic insulators
Wednesday, April 5
9:30-10:30 Zhenghan Wang Dynamical topological phases of matter I: Spaces of gapped Hamiltonians
10:45-11:45 Xiao-Gang Wen From maximal emergent categorical symmetry to gapless liquid state -- an algebraic approach to gapless quantum field theory
13:30-14:30 Haruki Watanabe Ground state degeneracy on torus in topologically ordered phases and symmetry-broken phases
14:45-15:45 Yu-An Chen Pauli stabilizer models of twisted quantum doubles
16:00-17:00 Jeffrey Teo Minimal unimodular integer quantum Hall states and their fractional descendants
Thursday, April 6
9:30-10:30 Zhenghan Wang Dynamical topological phases of matter II: Floquet error correction codes
10:45-11:45 Masaki Oshikawa Non-Invertible Duality Transformation Between SPT and SSB Phases
13:30-14:30 Chen Fang Classification of high-order topological states protected by crystalline symmetries
14:45-15:45 Ryohei Kobayashi Higher-group symmetry of topological order and stabilizer codes

The conference is open to everyone. We cannot give financial supports to participants except for invited speakers, unfortunately. If you have any inquiry, please send one to Yasuyuki Kawahigashi ( If you need an official invitation letter for administrations at your institution or a visa application, please also write to us.

The hotel closest to the conference site is Keihanna Plaza Hotel. Other possible hotels are Nara Royal Hotel, Daiwa Roynet Hotel Nara, Comfort Hotel Nara, and Hotel Nikko Nara.

This meeting is supported by the grants "Theoretical studies of topological phases of matter" of Japan Science and Technology Agency (JPMJCR19T2, Y. Kawahigashi).

The home page of Kawahigashi.