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 laws of physics.

 The workshop "Quantum extreme universe from quantum information" (Sep. 26-Sep. 30) is now being held. https://www2.yukawa.kyoto-u.ac.jp/~qith2022/index.php

For participation in our online event, please register in our ExU mailing list here.



Our A01 group will organize an online workshop "Third Kyoto Workshop on Quantum Information, Computation, and Foundations" (October 17th-21st). For details, please see https://www2.yukawa.kyoto-u.ac.jp/~qicf22/.


A paper by Prof. Yasuaki Hikida from group C01 and his collaborator is press released. They have constructed a holographic theory of three-dimensional de Sitter gravity, and performed, for the first time, a successful holographic computation of the primordial fluctuations. For details, please see https://www.kyoto-u.ac.jp/ja/research-news/2022-08-10.


The research achievement by C01 (Hikida, Taki and Takayanagi) and D01 (Nishioka) was taken up in an article of Physics Magazine (APS). In this work, the authors discover a microscopic mode which describes an expanding universe in the light of holographic principle. The details can be found in the following page.


The registration for the workshop "Quantum extreme universe from quantum information" (Sep. 26-Sep. 30) is now open. https://www2.yukawa.kyoto-u.ac.jp/~qith2022/registration.php
The deadline for the onsite participation is August 1st.


The 8th Extreme Universe Colloquium was held. [Colloquium Video][Slides].