Workshop

The 19th High Performance Computing Physics (HPC-Phys) Workshop

August 31 (Thu) at 13:30 - 17:30, 2023

Computational science is indispensable research method in various fields in physics. On the other hand, there is technical challenge in massive numerical simulations, such as optimization for each computational system and proper choice of computational method, and it is desirable to promote interdisciplinary collaborations between different fields. This series of workshops is organized to enhance such interdisciplinary activities among wide area of computational physics. The 19th workshop will be held with the following program: Program 13:30-13:35 Introduction 13:35-14:25 Tomonori Shirakawa : "Simulation of quantum computation using tensor network method" 14:25-15:15 Misa Ogata : "New computational method using Lagrangian construction for equilibrium shape of 2-dimensional stars" 15:15-15:35 Break 15:35-16:25 Rico Pohle : "Semi-classical Monte Carlo and molecular dynamics simulations of spin coherent states" 16:25-17:15 Ken-Ichi Ishikawa : "Algorithms for Lattice Quantum Chromodynamics" 17:15-17:30 Discussions (17:30- Informal social gathering)

Venue: Welfare and Conference Bldg. 2F Meeting Room, RIKEN Wako Campus

Event Official Language: Japanese

Exploring 2D Quantum Spacetime Based on Causal Dynamical Triangulations

August 21 (Mon) - 23 (Wed), 2023

Yuki Sato (Associate Professor, National Institute of Technology, Tokuyama College)

This is the fourth event by the Quantum Gravity Gatherings (QGG) Study Group at RIKEN iTHEMS. For this event we have invited Prof. Yuki Sato, National Institute of Technology, Tokuyama College, to give pedagogical lectures on the causal dynamical triangulations approach to quantum gravity. We wish this event to provide insights to researchers in related fields. The causal dynamical triangulations formalism appears to be one of the most promising constructive approaches to quantum gravity: possessing deep links with the asymptotic safety programme and Hořava-Lifshitz gravity, causal dynamical triangulations appears to avoid many of the well-known pathologies characteristic of its Euclidean analogue. As an example the emergence of spacetime geometry remains possible in various spacetime dimensions. While many of the results in higher dimensions are understood only at the numerical level, the analytical study of the approach in two spacetime dimensions is relatively well developed; Yuki Sato is a leading expert on these latter developments and we are very lucky he has agreed to present the understanding of 2D causal spacetime coming from this approach in a manner consistent with the Quantum Gravity Gatherings philosophy. This intensive lecture series is intended to be a lively and participatory event, not just a listening experience. For this reason, the number of participants will be limited to about 30 with priority given to graduate students and young post-docs; the intensive talk will be given in a face-to-face blackboard style (in English, no online streaming) to allow for informal and lively Q&A discussions. The program will also include short talk sessions, where interested participants can give a 5 min talk on a topic of their choice (their research, reviews on some works, what they want to study in the future, etc.). Registration is available via the dedicated website.

Venue: #435-437, 4F, Main Research Building

Event Official Language: English

6th Workshop on Virus Dynamics

July 4 (Tue) - 6 (Thu), 2023

Catherine Beauchemin (Deputy Program Director, iTHEMS)
Shingo Iwami (Professor, Graduate School of Science, Nagoya University)

The Workshop on Virus Dynamics is an international meeting held every 2 years. It brings virologists, immunologists, and microbiologists together with mathematical and computational modellers, bioinformaticians, bioengineers, virophysicists, and systems biologists to discuss current approaches and challenges in modelling and analyzing different aspects of virus and immune system dynamics, and associated vaccines and therapeutics. This 6th version of the workshop builds on the success of previous ones held in Frankfurt (2013), Toronto (2015), Heidelberg (2017), Paris (2019) and virtually (2021). It is supported by the Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) program at RIKEN, by Nagoya University, and by the Japan Science and Technology Agency. Up-to-date information and registration is available via the website. The workshop is for in-person participation only (no virtual or hybrid option).

Venue: Noyori Conference Hall, Higashiyama Campus, Nagoya University

Event Official Language: English

iTHEMS Science Outreach Workshop 2023

June 16 (Fri) - 18 (Sun), 2023

This year's meeting on "Outreach of RIKEN iTHEMS 2023@Sendai&Zoom" will be held from FRI June 16 to SUN June 18, as a face-to-face meeting at TOKYO ELECTRON House of Creativity of Tohoku Forum for Creativity in cooperation with iTHEMS SUURI-COOL (Sendai) using ZOOM for the necessary part as well.

Venue: TOKYO ELECTRON House of Creativity, Katahira Campus, Tohoku University / via Zoom

Event Official Language: Japanese

Exploring GPT’s Influence on Natural Science and Mathematics

May 17 (Wed) at 10:00 - 15:00, 2023

We are organizing a workshop to explore the application of ChatGPT in natural sciences, with a focus on theoretical physics and mathematics. Advances in GPT-4 and plugin technology are expected to bring about transformative changes in the way research is conducted. We will investigate the potential for another shift in research methodology following the advent of computers. Expert-led lectures on large language models (LLMs/ChatGPT) will also be conducted. We aim to deepen the discussion on the effective utilization of LLMs as tools to support the research of physicists and mathematicians. This workshop will be held in a hybrid format, combining online streaming with in-person presentations, to accommodate a larger number of participants. In addition to the lectures, short talks and discussions will be held entirely offline. The target audience is mainly students and researchers in the natural sciences, but please note that there will be a limit to the number of in-person attendees. The aim of this event is to provide a forum for researchers to engage in earnest discussions. Those who do not align with the objectives of this workshop are kindly asked to refrain from participating. We look forward to this opportunity to consider, together with all of you, new research methods and perspectives in the fields of theoretical physics and mathematics in the natural sciences, utilizing ChatGPT. (The above text was created by modifying the text generated by Chat-GPT and GPT-4.) All talks will be delivered in Japanese.

Venue: #435-437, 4F, Main Research Building (Main Venue) / via Zoom

Event Official Language: Japanese

Spring Workshop on Quantum Gravity

April 26 (Wed) - 28 (Fri), 2023

This is co-hosted by iTHEMS and NCTS, and is also the first of Quantum Gravity Gatherings. What is space-time? How did the universe begin? Various approaches exist toward theories of quantum gravity that can answer such fundamental questions. Each approach has its own strengths and weaknesses and should capture, at least partially, some essential aspect of quantum gravity. Then, what are the general properties (if any) of the quantum nature of gravity independent of the details of such approaches? As the main speaker, we have asked Hikaru Kawai to give an intensive talk approaching this question from both general and specific arguments in a style consistent with the concept of Quantum Gravity Gatherings. We hope that the younger generation will experience his powerful arguments based on his experience and deep insights. This workshop is intended to be a lively and participatory event, not just a listening experience. For this reason, the number of participants will be limited to about 30 with priority given to graduate students and young post-docs; the intensive talk will be given in a face-to-face blackboard style (in English, no online streaming) to allow for informal and lively Q&A discussions. In addition, there will be sessions where any participant can give a short talk on any topic of his/her choice. Through these, all the participants will discuss the above question from various angles, and the young generations in Japan and Taiwan will stimulate each other and start new exchanges.

Venue: #435-437, 4F, Main Research Building

Event Official Language: English

RIKEN-Nara Women's University Joint Diversity Promotion Workshop

March 7 (Tue) at 13:30 - 13:00, 2023

The RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) and the Faculty of Science at Nara Women's University are promoting a project to foster female researchers under the auspices of the RIKEN Diversity Promotion Office. As part of the program, 17 undergraduate and graduate students from Nara Women's University will visit several laboratories on the RIKEN Wako campus to ask questions about their research, hold workshops with iTHEMS researchers, and present their own research. Organizers: RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program Faculty of Science, Nara Women's University Program: Tuesday, March 7 13:30-14:00 Opening remarks by Tetsuo Hatsuda (iTHEMS) 14:00-15:30 Erika Kawakami Laboratory (RQC) (S51, Chemistry and Materials Physics Bldg.) 15:30-17:00 Zhaomin Hou Laboratory (CSRS) (S51, Chemistry and Materials Physics Bldg.) 17:00-18:30 RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) (C01, Main Research Bldg.) 18:30-21:00 Research Presentations by Nara Women's University Students (C01, Main Research Building) Wednesday, March 8 9:00-10:30 Nishina Center RIBF Facility (RNC) (E01, Nishina RIBF Bldg.) 10:30-12:00 Atsushi Miyawaki Laboratory (CBS) (C51, Brain Science Central Bldg.) 12:00-13:00 Lunch (C61, Welfare and Conference Bldg.) 13:00 Closing

Connecting the hierarchies: from cosmos to life

February 20 (Mon) at 10:00 - 16:45, 2023

Yuki Yokokura (Senior Research Scientist, iTHEMS)
Etsuko Itou (Senior Research Scientist, iTHEMS)
Catherine Beauchemin (Deputy Program Director, iTHEMS)

As each research field in modern science has matured and become more sophisticated and deepened, it has also created the problem that it has become too fragmented from the perspective of the field as a whole. On the other hand, looking at individual research themes, research that connects different hierarchical structures, such as cosmogenesis and particle theory, neutron stars and nuclear theory, large-scale structure of the universe and formation of galaxies, stars, and planets, turbulent phenomena over a wide range of scales, life and non-equilibrium phenomena, etc., is progressing, and efforts to understand physical phenomena from an integrated perspective is spreading. The term "hierarchy" can also be interpreted as a hierarchy of theories, different principles and perspectives. Therefore, in this TJR workshop, we invite relevant lecturers from external institutes to give talks focusing on how they are striving to link different hierarchies in their respective research fields, with the aim of broadening our research perspectives and inspiring future research. Of course, the purpose is also to inform and inspire the younger generation about cross-disciplinary research topics.

Venue: Nambu Hall, Toyonaka Campus, Osaka University / via Zoom

Kyoto Univ. MACS Program x RIKEN iTHEMS Collaborative Research Forum

February 13 (Mon) at 13:00 - 18:00, 2023

RIKEN iTHEMS and the SACRA Interdisciplinary Research Division of the Graduate School of Science, Kyoto University signed a joint research agreement on the task "Creation of new fields and solution of various problems in science using mathematical-based interdisciplinary methods", which started in 2018, and the two institutions have been strengthening collaboration over the past five years. During this period, various collaborative activities in both research and education have been carried out and results have been achieved, including the holding of research symposia, joint lectures across universities, the establishment of visiting lectures, and educational activities in the MACS Study Group. At this forum, we would like to present the results of these five years of joint research and to link them to the start of further collaboration in the future. In particular, many undergraduate and graduate students have participated in the "MACS Study Group 2022-SG5 Pipeline Connecting RIKEN and MACS", and have been actively engaged in research activities with RIKEN researchers. The results of these SG5 activities will be presented by the students.

Venue: 4F, South Tower, School of Science Bldg. No.6, Kyoto University (Main Venue) / via Zoom

Event Official Language: Japanese

Functional Renormalization Group at RIKEN 2023 -From condensed matter and particle physics to gravity-

January 21 (Sat) - 22 (Sun), 2023

Gergely Fejos (Assistant Professor, Institute of Physics, Eötvös Loránd University, Hungary)
Yuya Tanizaki (Special Postdoctoral Researcher, Theory Group, RIKEN Nishina Center for Accelerator-Based Science (RNC) / Assistant Professor, Yukawa Institute for Theoretical Physics, Kyoto University)
Takeru Yokota (Special Postdoctoral Researcher, iTHEMS)
Junichi Haruna (Ph.D. Student, Graduate School of Science, Kyoto University)
Rina Tazai (Assistant Professor, Yukawa Institute for Theoretical Physics, Kyoto University)
Shunsuke Yabunaka (Researcher, Japan Atomic Energy Agency (JAEA))
Taiki Haga (Assistant Professor, Division of Physics and Electronics, Graduate School of Engineering, Osaka Metropolitan University)
Masatoshi Yamada (Assistant Professor, College of Physics, Jilin University, China)

Functional renormalization group (FRG) is a powerful theoretical tool to investigate physical systems described by field theory. Its application covers diverse areas of physics spanning from condensed matter and statistical physics to particle physics and gravity. The purpose of this two-day workshop is to overview the recent applications and progresses of FRG in various fields of physics, to discuss future directions, and to seek for possible new collaborations bridging different fields of physics.

Venue: #345-347, 3F, Main Research Building (Main Venue) / via Zoom

Event Official Language: English

The 3rd "Medicine and Mathematics" Workshop Organized by KUIAS, iTHEMS and Heidelberg Univ.

September 30 (Fri) - October 1 (Sat), 2022

We will have the 3rd workshop organized by KUIAS, iTHEMS and Heidelberg Univ. on "Medicine and Math" in Kyoto (hybrid style) on Sep.30-Oct.1, 2022. Please join if you are interested in this interdisciplinary subject. Most of the talks are in Japanese except for session 3. For more information and registration, please visit the related links. Co-organized by: Center for Integrative Medicine and Physics, Kyoto University Institute for Advanced Study (KUIAS) RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) Center for Science Adventure and Collaborative Research Advancement (SACRA), Kyoto University

Venue: Maskawa Hall, 1F, Maskawa Building for Education and Research / via Zoom

DM3 - Deep insights and Multiple strategies for Deciphering the Mystery of Dark Matter

September 15 (Thu) - 17 (Sat), 2022

Venue: SUURI-COOL (Kobe) / via Zoom

Event Official Language: English

International Workshop on Blockchain Technology: Blockchain Kaigi 2022 (BCK22)

August 4 (Thu) - 5 (Fri), 2022

The International workshop Blockchain Kaigi (Kaigi : Meeting, Conference) aims at bringing together researchers and practitioners from various communities of science and technology working on areas related to FinTech, crypto-asset, and blockchain. On February 17-18, 2021, the international workshop “Blockchain in Kyoto 2021 (BCK21)” was successfully held at Kyoto University with more than 200 participants worldwide. As the second edition of the conference, the international workshop BCK22: Blockchain Kaigi 2022 will be held in Tohoku University, Sendai on August 4-5, 2022. We are looking forward to your registration for general lectures. There is no fee to attend. Authors are encouraged to submit theoretical and/or applied articles on their research related to Blockchains in general. For more information, please visit the official website at the related links below.

Venue: TOKYO ELECTRON House of Creativity, Katahira Campus, Tohoku University / via Zoom

iTHEMS Science Outreach Workshop 2022

July 29 (Fri) - 31 (Sun), 2022

This year’s meeting on “Outreach of RIKEN iTHEMS 2022@Kobe&Zoom” will be held from FRI July 29 to SUN July 31, as a face-to-face meeting as much as possible at iTHEMS SUURI-COOL Kobe using ZOOM for the necessary part as well. This is a meeting where members of iTHEMS and science journalists, science writers, etc meet together. iTHEMS researchers explain their research to journalists etc. and science journalists and writers talk about their experiences.

Venue: SUURI-COOL (Kobe) / via Zoom

Event Official Language: Japanese

Towards the Use of Data Assimilation for COVID-19 Investigations

February 14 (Mon) at 13:00 - 17:30, 2022

Catherine Beauchemin (Deputy Program Director, iTHEMS)
Takemasa Miyoshi (Team Leader, Data Assimilation Research Team, RIKEN Center for Computational Science (R-CCS))

This workshop aims to present recent investigations related to mathematical modeling of COVID-19 spread and impacts, and to foster the use of data assimilation techniques in future studies. It also aims to facilitate interactions and discussions among researchers from different fields such as epidemiology, economics, and mathematics. This workshop is jointly hosted by RIKEN Data Assimilation Research Team and by Nagoya University Graduate School of Mathematics, and supported by FY2021 RIKEN President's Discretionary Funds for COVID-19. A hybrid meeting is planned, but depending on the situation, an online version will be organized. Young researchers and students are encouraged to attend. Program: 13:00 - 13:10 Opening 13:10 - 14:00 Hiroshi Nishiura (Kyoto University) (35 min + 15 min Q&A) TBD 14:00 - 14:50 Catherine Beauchemin (RIKEN iTHEMS) (35 min + 15 min Q&A) The straight line: simple and effective 14:50 - 15:10 Break 15:10 - 16:00 Taisuke Nakata (The University of Tokyo) (35 min + 15 min Q&A) Balancing NPIs and Economic Activities 16:00 - 16:50 Qiwen Sun (RIKEN Data Assimilation Research Team, Nagoya University) (35 min + 15 min Q&A) Analysis of COVID-19 in Japan with Extended SEIR model and ensemble Kalman filter 16:50 - 17:30 Discussion

Venue: Hybrid Format (RIKEN R-CCS room 107 and Zoom)

Event Official Language: English

RIKEN-Vancouver Joint Workshop on Quantum Computing

August 24 (Tue) - 25 (Wed), 2021

The main aim of this workshop is that the quantum people in RIKEN (iTHEMS and RQC) and Vancouver (Quantum BC) get together online to discuss scientific activities and explore future collaborations. Program: August 24, 2021 (8:30am - 1:00pm) Tokyo August 23, 2021 (4:30pm - 9:00pm) Vancouver Tetsuo Hatsuda (iTHEMS): Welcome + iTHEMS overview Yasunobu Nakamura (RQC): RQC overview Lukas Chrostowski (UBC): Quantum BC overview Shunji Matsuura (1QBit): Accurate state preparation on noisy quantum devices Olivia Di Matteo (UBC): Operational, gauge-free quantum tomography Yasunobu Nakamura (RQC): Towards superconducting quantum computing Jason Chang (iTHEMS): Improving Schroedinger equation implementations with gray code for adiabatic quantum computers Robert Raussendorf (UBC): Computationally universal phase of quantum matter Akira Furusawa (RQC): Large-scale quantum computing with quantum teleportation August 25, 2021 (8:30am - 1:30pm) Tokyo August 24, 2021 (4:30pm - 9:30am) Vancouver Etsuko Itou (iTHEMS): Digital quantum simulation for screening and confinement in gauge theory with a topological term Joe Salfi (UBC): Engineering long coherence times of spin-orbit qubits in silicon Seiji Yunoki (RQC): Quantum simulations for quantum many-body systems: Variational quantum algorithms and beyond Takumi Doi (iTHEMS): Hybrid quantum annealing via molecular dynamics Drew Potter (UBC): Simulating highly-entangled matter with quantum tensor networks Seigo Tarucha (RQC): High-fidelity quantum gates in silicon quantum computing Organizing Institutes: iTHEMS: RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program RQC: RIKEN Center for Quantum Computing Quantum BC Organizers: Tetsuo Hatsuda (iTHEMS) Yasunobu Nakamura (RQC) Shunji Matsuura (1QBit) Joseph Salfi (UBC) Erika Kawakami (RQC / RIKEN CPR) Neill Lambert (RIKEN CPR)

Venue: via Zoom

Event Official Language: English

iTHEMS Science Outreach Workshop 2021

July 11 (Sun) - 12 (Mon), 2021

RIKEN iTHEMS, an interdisciplinary Theoretical and Mathematical Sciences Program (RIKEN iTHEMS), was established in November 2016. RIKEN iTHEMS aims to use interdisciplinary methods with a focus on mathematics to elucidate the universe, matter and life, and to solve fundamental problems in society. Building on the achievements of the past exchanges through the Journalist in Residence Program, we will hold an outreach workshop to explore the relevance of the research of the RIKEN iTHEMS to society and to discuss how to build interactive relationships between journalists and researchers in the future. Like last year, this year's workshop will be held as a ZOOM workshop as the seminar house is closed. Contact: Takashi Tsuboi (iTHEMS Deputy Director)

Venue: via Zoom

Event Official Language: Japanese

The 12th RIKEN-Kyoto University Joint Data Assimilation Workshop

February 10 (Wed) at 13:30 - 16:30, 2021

Language: Japanese/English Participation deadline: Tuesday, February 9, 2021

Venue: via Online

Event Official Language: Japanese

The 3rd RIKEN - Kyushu University Joint Workshop -- Micro-Macro Connecting by Mathematics: Elementary Particles, Atomic Nuclei, and the Universe

December 21 (Mon) - 22 (Tue), 2020

Tetsuo Hatsuda (Program Director, iTHEMS)
Naomi Tsuji (Postdoctoral Researcher, iTHEMS)

Chair: Tetsuo HATSUTA (RIKEN iTHEMS) et al. Lecture: Naomi Tsuji (RIKEN iTHEMS) et al.

Venue: via Online

Event Official Language: Japanese