理化学研究所数理創造プログラム (iTHEMS) | iTHEMS

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Farewell message from Yantao Wu

Our colleague Yantao Wu will move on to a new career as a faculty member at Institute of Physics, Chinese Academy of Sciences as of January 10, 2024. We all will miss him and wish him the best of luck in his latest endeavor. Here is a message from Yantao Wu: <i>I joined iTHEMS in June 2021 as a RIKEN-Berkeley fellow, and have stayed here for three years and a half now. iTHEMS is a precious rare place in the academic world, where there seems to be no responsibility, no one telling you what to do, and infinite space for travel; where there seems to be a curious mind on every subject and every question ought to be asked. The interdisciplinary nature of the group has forever left an imprint on me, and I will always remember the vivid biological facts and mathematical tricks that I have learned here. Entering as a condensed matter physicist and leaving as a condensed matter physicist, my heart will always have a spot for the particle theory which I have learned from here. It has been an unexpected, yet very pleasant mix. Sadly, it appears that every gathering ends somewhere, and I need to leave this warm and protective bubble to a new place, to really enter the grown world of independent research and start my own group. iTHEMS will always remain as a source of lasting encouragement. I will move to the Institute of Physics, Chinese Academy of Sciences in Beijing to start a faculty position. If you ever want to visit, please let me know you are from iTHEMS and I will make you a cup of tea (amidst taking you to the great wall and covering your travel costs.) </i>

2025-01-10
量子観測に誘起されたスペクトル相転移の発見

理化学研究所（理研）開拓研究本部濱崎非平衡量子統計力学理研白眉研究チームの濱崎立資理研白眉研究チームリーダー（理研数理創造プログラム上級研究員）、東京大学大学院工学系研究科物理工学専攻の望月健助教（理研開拓研究本部濱崎非平衡量子統計力学理研白眉研究チーム客員研究員）の共同研究チームは、観測下の量子系におけるスペクトル相転移を発見しました。本研究成果は、近年急速に研究が進んでいる「非平衡な量子系における観測誘起相転移」と、古くから精力的に研究されている「平衡状態にある量子系における相転移」を、同一の枠組みで統一的に理解することにつながると期待されます。共同研究チームは、Lyapunov解析という手法を用いることで、観測下の量子系においてもスペクトル相転移が存在することを示しました。また、その臨界点が量子もつれ転移の臨界点と一致することを見いだしました。詳細は関連リンクをご覧下さい。

2025-01-10
古代DNAが西暦1千年紀の移住に関する新たな理解を解明

理化学研究所（理研）数理創造プログラム（iTHEMS）のシュパイデル玲雄理研ECL研究ユニットリーダーらの国際共同研究グループは、古代DNAを用いたより正確な祖先分析法を用いて、紀元後1千年紀にヨーロッパを横断した人類の移動を明らかにしました。本研究成果の新しい方法は、世界中の他の集団に適用することが可能で、パズルの欠けているピースを明らかにすることが期待できます。詳細は関連リンクよりフランシス・クリック研究所のプレスリリースをご覧下さい。

2025-01-02
iTHEMS Science Outreach Workshop 2024 was held on November 15-17, 2024

On November 15-17, we had Meeting on Outreach of RIKEN iTHEMS 2024 @Sendai & Zoom. This year as the last year the meeting was held at TOKYO ELECTRON House of Creativity 3F, Lecture Theater, Katahira Campus, Tohoku University. It was organized by RIKEN iTHEMS and Mathematical Science Center for Co-creative Society of Tohoku University and co-organised by Tohoku Forum for Creativity, Organization for Research Promotion, Tohoku University and RIKEN CPR, Prediction Science Laboratory. There were 39 people participated at TOKYO ELECTRON House of Creativity and 16 more by zoom. There were 20 talks at the venue and 2 talks by zoom. There were 2 posters, one photo exhibition. There were really a variety of thought around the past and the future of mathematics. Some of highlights are: talks concerning about causality from designers and physisists; about teaching mathematics in Art University; about the preparation of "Mathematics Connecting to the World: One S&T poster for Every Household"; etc. 7 talks were given by journalists and 1 by MEXT. The on-site participants consist of 10+1 members from RIKEN, 14+3 from universities and institutes, and 12+5 journalists (at venue + by zoom). We organized a social gathering on the first evening which was successful. We thank very much for the help of Tohoku University for the warm hospitality. By the success of this meeting, we hope the continuation of Journalist in residence program and this workshop next year. Reported by Takashi Tsuboi

2024-12-24
Hadrons and Hadron Interactions in QCD -- Experiments, Effective theories, and Lattice -- (HHIQCD2024) was held from Oct. 14 to Nov. 15, 2024

On Oct. 14 (Mon) - Nov. 15 (Fri), a long-term workshop "Hadrons and Hadron Interactions in QCD -- Experiments, Effective theories, and Lattice -- (HHIQCD2024)" was held at Yukawa Institute for Theoretical Physics (YITP), Kyoto University. The week of Oct. 28 (Mon) - Nov. 2 (Fri) was held as "Nishinomiya-Yukawa symposium". The workshop was sponsored by YITP and supported by RIKEN-iTHEMS and several JSPS/JST programs. We had 193 participants from all over the world, with most of them attending in-person. There were 64 invited talks and 49 contributed talks. The international school, "Introduction to QCD and related topics", was also held and 5 lectures were given. The purpose of this HHIQCD2024 workshop was to bring researchers in lattice QCD, various effective field theories and also experimentalists together and make extensive discussions on hadron physics. Furthermore, the workshop also focused on formal developments of quantum field theories and frontiers of first-principle calculations (quantum computation and tensor network methods). The workshop expected to bring a new direction of researches to understand the nature of QCD. This long-term workshop was a "stay-and-discuss" style workshop in a relaxed atmosphere, where each participant was encouraged to stay long. With this style, participants had intensive discussions with other participants, and even started new collaborations during the workshop. Presentation slides can be downloaded from the HHIQCD2024 web page.

2024-12-17
量子重力理論の探求と未来への貢献 - 野村泰紀

カリフォルニア大学バークレー校の教授である理論物理学者の野村泰紀さんは、昨年から夏季の約2か月間、理研iTHEMSに滞在し、研究活動を行っています。多忙な日々を送りながら、アウトリーチ活動も積極的に取り組んでいる野村さん。これまでの人生の歩みや研究活動への思いなどについてお話を伺いました。記事全文は関連リンクからご覧ください。

2024-12-04
微生物の研究から広がる新たな医療の可能性 - 熊倉大騎

熊倉大騎さんは、北海道大学大学院生命科学院の博士課程の学生と並行して、理研iTHEMSに大学院生リサーチ・アソシエイト（Junior Research Associate: JRA）として在籍し、研究を進めています。学生としてiTHEMSで研究する利点や今後の展望などについてお話を伺いました。記事全文は関連リンクからご覧ください。

2024-12-04
Farewell message from Shingo Gibo

Our colleague Shingo Gibo will move on to a new career as senior researcher at Institute for Basic Science (IBS), South Korea as of December 1, 2024. We all will miss him and wish him the best of luck in his latest endeavor. Here is a message from Shingo Gibo: <i>I joined iTHEMS in September 2018 and spent six years as a postdoctoral researcher at iTHEMS. During this time, I have theoretically studied biological oscillations with Kurosawa-san. Additionally, I collaborated on interdisciplinary research on waveforms in circadian clocks with physicists, Hatsuda-san and Kunihiro-san. I would like to thank all the members for the valuable discussions and support. I have learned a lot and truly enjoyed my time at iTHEMS. From December, I will be moving to Institute for Basic Science (IBS) in South Korea as a senior researcher. Thank you for the great six years and see you again!</i>

2024-11-26
研究者であり続けるために - 辰馬未沙子

惑星はどのようなプロセスを経て形成されるのだろうか？——その答えを理論的に導き出すことを、辰馬未沙子研究員は目指しています。辰馬研究員は自身を「優柔不断なところもありますが、基本的には完璧主義」と評し、「どういう戦略を取ればよいかを考えて動く」と語ります。それは、研究はもちろん、プライベートライフにおいても当てはまります。その戦略とはどのようなものなのでしょうか。記事全文は関連リンクからご覧ください。

2024-11-18
科学を媒体にして人と人をつなぐには - 永井智哉

数学といえば思い浮かぶ、さまざまな数式を書き連ねた大きな黒板。黒板を囲んだ議論は数理創造プログラム（iTHEMS）の研究風景をとらえた動画や写真にもたびたび登場します。活発に議論が生まれるこうした「場」はどのように作られていくのでしょうか。研究環境づくりに取り組んでいる永井智哉コーディネーター／プログラムディレクター室室長にうかがいました。記事全文は関連リンクからご覧ください。

2024-11-18

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数理創造プログラム（Interdisciplinary Theoretical and Mathematical Sciences Program, 略称 iTHEMS アイテムズ）は、理論科学・数学・計算科学の研究者が分野の枠を越えて基礎研究を推進する、理化学研究所の新しい国際研究拠点です。iTHEMSでは、「数理」を軸とする分野横断的手法により、宇宙・物質・生命の解明や、社会における基本問題の解決を目指しています。

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