Correlation Effects in Quantum Many-Body Systems:
Some Prototypical Examples in Condensed Matter Physics
19–20 November 2025 @ RIKEN, Wako, Japan
The ninth installment of the Intensive Lecture Series, organized by the Quantum Gravity Gatherings (QGG) study group at RIKEN iTHEMS, will feature Prof. Norio Kawakami from the Fundamental Quantum Science Program (FQSP) under RIKEN's Transformative Research Innovative Platform (TRIP). Over the course of two days, Prof. Kawakami will deliver a lecture series on quantum many-body systems.
In recent years, insights from quantum many-body physics have become central to research in quantum gravity, where correlation effects induced by gravity play nontrivial roles. By bridging perspectives from gravitational physics and quantum many-body dynamics, one hopes to understand how macroscopic spacetime and its geometric properties emerge from the collective behavior of quantum constituents at microscopic scales.
In this lecture series, Prof. Kawakami will introduce the fundamental properties of correlation effects through representative examples in condensed matter physics. A distinctive aspect of this event is its joint organization with the Fundamental Quantum Science Program (FQSP) at RIKEN. The goal is to further strengthen connections between the quantum gravity, condensed matter, and quantum information communities.
The lectures will be delivered in a blackboard-style format (in English), designed to foster interaction, active participation, and in-depth Q&A discussions. In addition, short talk sessions will be held, giving participants the opportunity to present briefly on topics of their choice. Through this informal and dynamic setting, we hope to spark active interactions among participants and create an environment where ideas can be shared openly and enthusiastically.
Registration
- Deadline: October 23.
(If the number of registered participants exceeds the room capacity, registration may close earlier.) - Participants are encouraged to give a short talk on a topic of their choice — e.g., current research, future interests, a review of relevant work, or a self-introduction. This interactive session is intended to promote communication and encourage the exchange of ideas among participants.
- Limited on-campus accommodations
are available on a first-come, first-served basis
for participants traveling from remote areas.
Please note:
- A short talk is mandatory for those receiving accomodation support.
-
Check-in is set for November 18 and check-out for November 20.
These dates are fixed and cannot be adjusted.
Intensive Lectures
Professor Norio Kawakami 川上 則雄 (RIKEN)
Prof. Kawakami's Webpage
Correlation Effects in Quantum Many-Body Systems:
Some Prototypical Examples in Condensed Matter Physics
Some examples of theoretical methods to treat strongly correlated systems in condensed matter physics are explained. We start with the Kondo effect, which is one of the most fundamental quantum many-body problems and has been intensively studied to date in a wide variety of topics such as dilute magnetic alloys, heavy fermion systems, quantum dot systems, etc. Dynamical mean-field theory (DMFT) is then introduced, which enables us to systematically treat strongly correlated materials such as a Mott insulator. It is shown that the essence of DMFT is closely related to the Kondo effect. Furthermore, we explain how to apply conformal field theory (CFT) to treat correlation effects in one-dimensional electron systems.
Topics of these lectures include:
- Introduction to quantum many-body systems in condensed matter physics
- The Kondo effect: a prototypical quantum many-body problem
- Dynamical mean-field theory: a generic method to study correlation effects
- Application of CFT to correlated electron systems in one dimension
Program
November 19
10:00 ~ 10:30 Registration & reception (with coffee)10:30 ~ 12:00 Lecture 1
12:00 ~ 13:30 Lunch
13:30 ~ 15:00 Lecture 2
15:00 ~ 15:30 Coffee break (group photo)
15:30 ~ 17:00 Lecture 3
17:15 ~ 18:15 Short talk session 1
18:30 ~ 20:00 Welcome party
November 20
10:15 ~ 10:30 Reception (with coffee)10:30 ~ 12:00 Lecture 4
12:00 ~ 13:30 Lunch
13:30 ~ 15:00 Lecture 5
15:15 ~ 16:00 Short talk session 2 *
16:00 ~ 16:30 Coffee break
16:30 ~ 18:00 Lecture 6
* Short Talk Session 2 on November 20 may be shortened or cancelled depending on the number of presentations. In any case, a total of six lectures will be given, and the event will conclude no later than 18:00 on November 20.
Venue
Seminar Room #435-437, Main Research Building, RIKEN Wako Campus
Organizers
Che-Yu Chen (RIKEN iTHEMS)Yuta Hamada (KEK)
Puttarak Jai-akson (RIKEN iTHEMS)
Christy Kelly (RIKEN iTHEMS)
Ryo Namba (RIKEN iTHEMS)
Toshifumi Noumi (The University of Tokyo)
Naritaka Oshita (YITP / Hakubi – Kyoto University / RIKEN iTHEMS)
Wei-Hsiang Shao (RIKEN iTHEMS)
Sotaro Sugishita (Kyoto University / RIKEN iTHEMS)
Yuki Yokokura (KEK / RIKEN iTHEMS)
Contact: Wei-Hsiang Shao wei-hsiang.shao@riken.jp / Yuki Yokokura
Sponsors
