We aim to elucidate the "extreme universe" from the new perspective that all things are composed of "quantum information", going beyond the conventional understanding of "time, space, and matter" in physics. This "extreme universe" refers to the extreme conditions of the natural world, and includes the following three targets:
(i) quantum theory of Black holes (i.e. the limit of space),
(ii) quantum theory of Cosmology (i.e. the limit of time),
(iii) Dynamics of quantum matter (i.e. the limit of matter).
To solve these problems, we need the ultimate understanding of the laws of physics.
The 5th Extreme Universe Annual Meeting [Dec.26-28, 2025 @Matsuyama]
We have opened [a Youtube channel] dedicated to our collaboration activities. The videos we have now include the videos of the colloquia. We expect that more videos will come up in the near future.
WHAT’S NEW
Prof. Kotaro Tamaoka, Principal Investigator of Group E02, and Prof. Takanori Anegawa, Research Collaborator of Group B01, have announced a press release entitled “Inside a Black Hole Is the Ultimate Collection of Entangled Information -Theoretical Discovery of a Quantum State That Describes the Interior of a Black Hole-.” [Link]
The Principal Investigator of Planned Research Group B02, Prof. Masaki Tezuka (Kyoto University), and his colleagues have received the 31st Outstanding Paper Award of the Physical Society of Japan. Congratulations. For details, please see [Link].
We will have the 10th public ExU Online Colloquium “Public ExU Colloquium” on February 6 (Fri.) 11:30 (JST). The speakers are Prof. Stefan Hollands (University of Leipzig). For details, please refer to the poster. If you have not registered yet, please register at our online event website at least three days prior to the colloquium. (It is not necessary to register again if you have done it already.) This event is co-organized by Nagoya University Institute for Advanced Research (IAR) and Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI).
The 5th Extreme Universe Annual Meeting was held in Matsuyama, Ehime Prefecture, from Friday, December 26 to Sunday, December 28.
Approximately 100 participants attended in person, with additional participants joining online. The meeting featured presentations of the latest research and offered ample opportunities for discussion across a wide range of fields, including particle physics, cosmology, condensed matter physics, and quantum information. These interdisciplinary discussions fostered lively and productive exchanges among researchers. For more details, please see here.
At the poster session of the 5th Extreme Universe Annual Meeting, the following presenters were awarded the Poster Presentation Award. Congratulations to all the award recipients.
・Kenya Tasuki (YITP, Kyoto University)
・Kotaro Shinmyo (YITP, Kyoto University)
・Daisuke Yoshida (Nagoya University)
・Kohei Fukai (The University of Tokyo)
・Yunhyeon Jeong (Tohoku University)