The International Workshop on Exotic Quantum Phases due to Unhappy Electrons
Takeda Hall, Hongo-Asano Campus, University of Tokyo, Japan
November 12(Wed) -14(Fri), 2025

Scope
This workshop focuses on studies related to exotic quantum phases emerging from the following guiding principles:
(1) Confinement in low dimensions,
(2) Frustration/competing interactions,
(3) Quantum criticality,
(4) Multiple degrees of freedom, high entropy,
(5) Unusual valence states, and
(6) Other energetically unstable electronic states.
These guiding principles are common in terms of how one makes electrons in materials energetically unstable (or unhappy) to create exotic quantum phases. We will cover wide-ranging subjects, including correlated electron systems, low-dimensional systems, quantum spin systems, superconductors, and spin-orbit physics.
Invited Speakers (confirmed)
Hidenori Takagi (Max Planck Institute, Germany)
Gabriel Aeppli (ETH Zurich, Switzerland)
Sang-Wook Cheong (Rutgers Univ., USA)
Zenji Hiroi (Univ. of Tokyo, Japan)
Nigel Hussey (Bristol Univ., UK)
Harold Hwang (Stanford Univ., USA)
Bernhard Keimer (Max Planck Institute, Germany)
Bumjoon Kim (POSTECH, Korea)
Yong-Baek Kim (Toronto Univ., Canada)
Yuji Matsuda (Los Alamos National Lab., USA)
Masao Ogata (Univ. of Tokyo, Japan)
Thom Palstra (Univ. of Twente, The Netherlands)
Zhi-Xun Shen (Stanford Univ., USA)
Yuichi Shimakawa (Kyoto Univ., Japan)
Yoshinori Tokura (RIKEN & Univ. of Tokyo, Japan)
Registration
Please register through Google Forms.
Deadline: Sep. 30, 2025.
Abstract submission
We will have a poster session after lunch on Nov. 13th (Thu) and also have some slots for oral presentations by contributed speakers.
Please submit 1-page abstract in a pdf format through the Google Forms above.
Please use the Word format below and convert it to a pdf file.
Deadline of abstract submission: Sep. 30, 2025
Venue & Transportation
Takeda Hall of Takeda-sentanchi Building
in Hongo-Asano campus, University of Tokyo
2-11-16 Yayoi, Bunkyo, Tokyo 113-8656, Japan
Google map (Takeda-sentanchi Building in Hongo-Asano campus, University of Tokyo)
Hongo-Asano campus map
Takeda-sentanchi Building is No. 90 in the map.
Program
This workshop will start in the morning on Nov. 12th (Wed) and close at around noon on Nov. 14th (Fri).
We will have a poster session in the afternoon on Nov. 13th (Thu) and a banquet in the evening on Nov. 13th (Thu).
Accommodation
Forest Hongo
6-16-4 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
phone: +81-(0)3-3813-4408 Access Map
A block of rooms is booked for invited speakers.
You can find other hotels near Hongo campus, Univ. of Tokyo.
Organizing Committee
Tsuyoshi Kimura (Univ. of Tokyo)
Nic Shannon (OIST)
Tetsuo Hanaguri (RIKEN)
Yoshihiko Okamoto (Univ. of Tokyo)
Minoru Nohara (Hiroshima Univ.)
Sponsors
Institute for Functional Matter and
Quantum Technologies, University of
Stuttgart
