ニュース
102件のニュース / 2025年
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2025-07-10
今週の論文Week 2, July 2025
Title: Neural Unfolding of the Chiral Magnetic Effect in Heavy-Ion Collisions Author: Shuang Guo, Lingxiao Wang, Kai Zhou, Guo-Liang Ma arXiv: http://arxiv.org/abs/2507.05808v1 Title: Pair Correlation Conjecture for the zeros of the Riemann zeta-function II: The Alternative Hypothesis Author: Daniel A. Goldston, Junghun Lee, Jordan Schettler, Ade Irma Suriajaya arXiv: http://arxiv.org/abs/2507.06823v1 Title: Quantum Machine Learning for Identifying Transient Events in X-ray Light Curves Author: Taiki Kawamuro, Shinya Yamada, Shigehiro Nagataki, Shunji Matsuura, Yusuke Sakai, Satoshi Yamada Journal Reference: ApJ 987 105 (2025) doi: https://doi.org/10.3847/1538-4357/adda43 arXiv: http://arxiv.org/abs/2507.05589v1 Title: Zariski-dense deformations of standard discontinuous groups for pseudo-Riemannian homogeneous spaces Author: Kazuki Kannaka, Toshiyuki Kobayashi arXiv: http://arxiv.org/abs/2507.03476v1 Title: Whole-genome ancestry of an Old Kingdom Egyptian Author: Adeline Morez Jacobs, Joel D. Irish, Ashley Cooke, Kyriaki Anastasiadou, Christopher Barrington, Alexandre Gilardet, Monica Kelly, Marina Silva, Leo Speidel, Frankie Tait, Mia Williams, Nicolas Brucato, Francois-Xavier Ricaut, Caroline Wilkinson, Richard Madgwick, Emily Holt, Alexandra J. Nederbragt, Edward Inglis, Mateja Hajdinjak, Pontus Skoglund, Linus Girdland-Flink Journal Reference: Nature 2025 doi: https://doi.org/10.1038/s41586-025-09195-5
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2025-07-10
プレスリリース
ブラックホールの響きを数学的な技法を取り入れ精密に捉えることが可能に
大阪公立大学 数学研究所の宮地 大河 特別研究員、理化学研究所 数理創造研究センターの難波 亮 上級研究員、京都大学 大学院理学研究科の大宮 英俊 特定助教、京都大学 白眉センターおよび基礎物理学研究所の大下 翔誉 特定助教らの研究グループは、数学的な技法である「完全WKB解析」を取り入れることで、急速に減衰するブラックホールの準固有振動の周波数構造を、体系的かつ精密に捉えることができる手法を示すことに成功しました。本研究結果により、さまざまな理論モデルにおけるブラックホールの重力波信号を、より厳密に解析できるようになり、今後の重力波観測の精度向上や、ブラックホールの正確な性質検証に結びつくことが期待されます。 詳細は関連リンクをご覧下さい。
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2025-07-09
今週の注目人物
Self-introduction: Zhe Wang
I received my doctoral degree from Tsinghua University in 2023. After that, I spent two years at Kyoto University as a postdoctoral researcher. In 2025, I joined iTHEMS. My main research interest lies in exploring various aspects of mathematical physics using tools from integrable systems. In particular, I apply techniques from (infinite-dimensional) Hamiltonian integrable systems to study Gromov-Witten type theories, mirror symmetry, and related topics. A typical problem in this area involves constructing integrable systems that govern the partition functions of specific theories—such as cohomological field theory, equivariant quantum cohomology, quantum K-theory, or symplectic field theory—and analyzing their structure through the integrable systems. More recently, I've become increasingly interested in the connections between integrable hierarchies and quantum algebras, such as vertex algebras and W-algebras. While the classical relationships between these fields have been well studied, understanding their quantum counterparts remains a rich and challenging direction. I believe that further progress in this area will deepen our overall understanding of integrable systems, which play a central role in mathematical physics. If you’re interested in my work or would like to discuss related topics, I’d be very happy to hear from you. Please feel free to reach out!
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2025-07-08
リサーチニュース
RIKEN NEWS: 若手研究者を育むECL制度の魅力
数理遺伝学理研ECL研究ユニットのシュパイデル 玲雄 理研ECL研究ユニットリーダーのインタビュー記事が、理研の研究紹介ページ「クローズアップRIKEN 2025」のトピックスに掲載されました。あわせて、同インタビューの動画も公開されています。 若手研究者に対してより手厚い支援を行うため2023年に創設された理研ECL制度（RIKEN Early Career Leaders Program）。身軽で機動性の高い研究に挑戦できるよう、これまでの理研白眉制度を拡充し、チームリーダー（部長級。大学の若手教授相当）に加え、特に経験年数が少ない気鋭の若手研究者にホスト研究センターにおいて身軽な機動性の高い研究環境を提供するユニットリーダー（課長級。大学の准教授／講師相当）を設置しました。 その第1期生である数理創造研究センター（iTHEMS）数理基礎部門 数理遺伝学 理研ECL研究ユニットで、DNAの変異からヒトの進化や歴史を解明する研究に取り組むシュパイデル 玲雄 理研ECL研究ユニットリーダーにこの制度の魅力を聞きました。 続きは関連リンクをご覧下さい。
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2025-07-03
プレスリリース
エムポックス感染の拡大防止へ新たな指標 －血中ウイルス量で皮膚病変を予測、治療戦略に貢献－
名古屋大学 大学院理学研究科の岩見 真吾 教授（理化学研究所 数理創造研究センター 客員研究員）の研究グループは、オランダ国立公衆衛生環境研究所(RIVM)/愛媛大学の三浦 郁修 博士および米国陸軍感染症研究所（USAMRIID）のPhillip R. Pittman 博士らとの国際共同研究により、エムポックス（クレードIa）感染者における皮膚病変の症状進行に顕著な個人差があることを明らかにしました。また、発症時の血中ウイルス量がこれらの症状進行を予測する指標として有用である可能性を示しました。 詳細は関連リンクをご覧下さい。
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2025-07-03
今週の論文Week 1, July 2025
Title: Susceptibilities of rotating quark matter in Fourier-Bessel basis Author: Mamiya Kawaguchi, Kazuya Mameda arXiv: http://arxiv.org/abs/2507.00494v1 Title: Topological Defect Propagation to Classify Knitted Fabrics Author: Daisuke S. Shimamoto, Keiko Shimamoto, Sonia Mahmoudi, Samuel Poincloux arXiv: http://arxiv.org/abs/2506.22369v1 Title: Universal framework with exponential speedup for the quantum simulation of quantum field theories including QCD Author: Jad C. Halimeh, Masanori Hanada, Shunji Matsuura arXiv: http://arxiv.org/abs/2506.18966v1 Title: Observation of entanglement in a cold atom analog of cosmological preheating Author: Victor Gondret, Clothilde Lamirault, Rui Dias, Léa Camier, Amaury Micheli, Charlie Leprince, Quentin Marolleau, Jean-René Rullier, Scott Robertson, Denis Boiron, Christoph I. Westbrook arXiv: http://arxiv.org/abs/2506.22024v1
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2025-07-03
プレスリリース
宇宙を読み解く新たな知性:量子×AIで異常なエネルギー放射現象を発見 －X線宇宙観測データと量子機械学習の融合による世界初の成果－
大阪大学 大学院理学研究科の川室 太希 助教、立教大学の山田 真也 准教授、酒井 優輔さん（博士後期課程）、理化学研究所の長瀧 重博 主任研究員、松浦 俊司 上級研究員、東北大学の山田 智史 助教らによる研究グループは、欧州宇宙機関（ESA）が運用するX線天文衛星XMM-Newtonがこれまで約24年間にもわたり取得してきた大規模な宇宙のX線変動データから、量子コンピュータと機械学習を組み合わせた量子機械学習モデルを構築し適応することで、113件の異常なエネルギー（X線）放射現象を捉えることに成功しました。 詳細は関連リンクをご覧下さい。
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2025-07-03
ホットトピック
Farewell message from Yuki Fujimoto
Our colleague, Yuki Fujimoto, left iTHEMS on June 30 and has moved to Niigata University to take up a position as Assistant Professor. We thank him for his time at iTHEMS and wish him all the best in this new chapter. Here is a message from Yuki Fujimoto: As of June 30, I have left iTHEMS, and I would like to express my sincere gratitude to all the members of iTHEMS. I am moving to Niigata University to take up a position as an assistant professor. I joined iTHEMS in October 2024 as a RIKEN-Berkeley Fellow and was primarily based at the RIKEN center at UC Berkeley. Although my time at the Wako campus was brief, I greatly enjoyed the interactions and discussions with colleagues from a wide range of fields. I will continue to be affiliated with iTHEMS as a visiting scholar, and I look forward to seeing you all when I visit Wako. You are all very welcome to visit me in Niigata as well. I wish iTHEMS continued growth and success in the future.
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2025-07-03
プレスリリース磁気渦物質における角運動量反転現象の理論的発見 －ゲージ不変な熱力学が導く量子物質の新たな普遍性－
東京理科大学 理学部第一部 物理学科の豆田 和也 助教（兼 理化学研究所 数理創造研究センター 客員研究員）、東京大学 大学院理学系研究科の福嶋 健二 教授、浙江大学 物理学院 浙江近代物理中心の服部 恒一 研究員らの共同研究グループは、強磁場と回転が共存する量子系の角運動量偏極では、スピンよりも粒子の軌道運動に由来する軌道角運動量が優勢となり、従来とは逆向きの偏極が実現することを理論的に発見しました。 詳細は、関連リンクをご覧下さい。
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2025-07-03
プレスリリース
AIで実現する高解像度銀河シミュレーション－銀河進化の計算を6カ月短縮し約2カ月で完了－
理化学研究所（理研）数理創造研究センター 数理基礎部門の平島 敬也 基礎科学特別研究員、東京大学 大学院理学系研究科の藤井 通子 准教授、森脇 可奈 助教、東北公益文科大学 公益学部 公益学科の平居 悠 講師、神戸大学 大学院理学研究科の斎藤 貴之 准教授、牧野 淳一郎 特命教授、マックス・プランク天体物理学研究所のウーリッヒ・フィリップ・ステインワンデル 博士研究員、フラットアイアン研究所 計算天体物理学センターのシャーリー・ホー グループリーダーの国際共同研究グループは、人工知能（AI）の深層学習を用いて超新星爆発の複雑な物理過程を予測するサロゲート・モデルを開発し、これを銀河形成シミュレーションコードに初めて統合しました。 本研究成果は、シミュレーション中にリアルタイムで深層学習の推論を行い、従来実現が難しかった一つ一つの星を直接扱う「星ごと（star-by-star）」の高分解能銀河シミュレーションを加速した最初の例です。今回開発された手法は、われわれの住む天の川銀河の形成と進化における超新星フィードバックの詳細な解析に貢献すると期待されます。 詳細は、関連リンクをご覧下さい。
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2025-06-26
今週の論文Week 5, June 2025
Title: A new upper bound for mutually touching infinite cylinders Author: Junnosuke Koizumi arXiv: http://arxiv.org/abs/2506.19309v1 Title: The quantum criticality of the Standard Model and the hierarchy problem Author: Juan P. Garcés, Florian Goertz, Manfred Lindner, Álvaro Pastor-Gutiérrez arXiv: http://arxiv.org/abs/2506.15919v1 Title: Observing Leptogenesis in Action with Gravitational Waves Author: Hitoshi Murayama, Bea Noether, Jan Schütte-Engel arXiv: http://arxiv.org/abs/2506.15772v1
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2025-06-23
プレスリリース
量子測定が誘起するトポロジカル相のバルクエッジ対応
濱崎 立資 上級研究員を含む研究グループは、測定下の量子系の有効エネルギーの準位構造とバルクのトポロジカル不変量を調べる方法を提案し、その方法を実際に用いて量子測定によって誘起されるトポロジカル相転移の理論的解析を行いました。その結果、幻の粒子とも呼ばれる「マヨラナ粒子」に由来するゼロエネルギーエッジ状態が、測定下のトポロジカル相で出現することを発見しました。また本研究では、孤立量子系で普遍的に成立するトポロジカル相のバルクエッジ対応が測定下の量子系においても発現することを実証し、測定によって誘起されるトポロジカル相転移の強固な理論的基盤を与えました。本研究で用いた手法は広いクラスのトポロジカル相に対して用いることができる汎用性があり、測定によって誘起される量子相の体系的・統一的な理解につながると期待されます。 詳細は関連リンクをご覧下さい。
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2025-06-23
プレスリリース
量子-スパコン連携による量子化学計算に成功
理化学研究所（理研）計算科学研究センター 量子系物質科学研究チームの白川 知功 上級研究員（量子計算シミュレーション技術開発ユニット 上級研究員、開拓研究所 柚木計算物性物理研究室 上級研究員、数理創造研究センター 量子数理科学チーム 上級研究員、量子コンピュータ研究センター 量子計算科学研究チーム 上級研究員）、柚木 清司 チームプリンシパル（開拓研究所 柚木計算物性物理研究室 主任研究員、創発物性科学研究センター 計算量子物性研究チーム チームディレクター、量子コンピュータ研究センター 量子計算科学研究チーム チームディレクター、最先端研究プラットフォーム連携（TRIP）事業本部統合データ・計算科学プログラム プロジェクトディレクター）らの国際共同研究グループは、IBMの量子コンピュータと理研のスーパーコンピュータ「富岳」を組み合わせた計算を通じて、従来の古典計算機では解析が困難だった量子化学の問題に対し、量子計算の実用化に向けた有効性を実証しました。 本研究では、量子コンピュータの実機から得られた出力をスーパーコンピュータで処理することで、50量子ビットを超える大規模な量子化学系において、初めて科学的に意味のある結果を得ることに成功しました。これにより、量子化学分野においても、古典計算の限界を超える規模の問題に対して量子計算が有効であることが示され、量子コンピューティングの実用化に向けた大きな前進となりました。 詳細は関連リンクをご覧下さい。
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2025-06-23
リサーチニュース
RIKEN NEWS: 「データオタク」が開く新たな世界
カトゥリン・ボシゥメン 副センター長のインタビュー記事が、理研の研究紹介ページ「クローズアップRIKEN 2025」のRIKEN Peopleに掲載されました。 ウイットに富んだ超高速の語り。そして笑顔。人間の魅力と可能性を感じさせる研究者である。数理創造研究センターのカトゥリン・ボシゥメン 副センター長。「ウイルス物理学」という新たな研究分野を開拓し、物理学の手法を用いて、目に見えない脅威になり得るウイルスを探究している。 続きは、関連リンクをご覧ください。
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2025-06-19
今週の論文Week 4, June 2025
Title: On 3-periodic tangled networks and their untangling number Author: Toky Andriamanalina, Sonia Mahmoudi, Myfanwy E. Evans arXiv: http://arxiv.org/abs/2506.15252v1 Title: Quantitative predictions of alpha-charmonium correlation functions in high-energy collisions Author: Faisal Etminan arXiv: http://arxiv.org/abs/2506.14724v1 Title: Enhancement of axial anomaly effects in hot two-color QCD: FRG approach in the linear sigma model Author: Gergely Fejős, Daiki Suenaga arXiv: http://arxiv.org/abs/2506.14010v1 Title: Scalable Simulation of Quantum Many-Body Dynamics with Or-Represented Quantum Algebra Author: Lukas Broers, Rong-Yang Sun, Seiji Yunoki arXiv: http://arxiv.org/abs/2506.13241v1 Title: Unpolarized prethermal discrete time crystal Author: Takeru Yokota, Tatsuhiko N. Ikeda arXiv: http://arxiv.org/abs/2501.09461v2 Title: Schwinger-Keldysh approach to tunneling transport at a hadron-quark interface Author: Tingyu Zhang, Hiroyuki Tajima, Motoi Tachibana arXiv: http://arxiv.org/abs/2506.09725v1
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2025-06-12
今週の注目人物
Self-introduction: Keiya Hirashima
Hi! My name is Keiya Hirashima, and I am a Special Postdoctoral Researcher at iTHEMS, working on galaxy formation and evolution using AI and large-scale simulations. My research focuses on modeling the effects of individual stars and stellar feedback in high-resolution galaxy simulations. To reduce computational costs, I have developed AI-based surrogate models that efficiently replace expensive physical simulations. I’m particularly interested in connecting different physical scales to study the hierarchical evolution of galaxies and the universe through numerical methods, deep learning, and high-performance computing. I also explore how fractal structures and foundation models can help extract general representations from complex physical systems. [My academic history] I began my position as a Special Postdoctoral Researcher at iTHEMS in April 2025. Prior to that, I studied computer science and mathematical science at Kyoto University in March 2020, and received my Ph.D. in Astronomy (sub: Information Science) from the University of Tokyo in March 2025. I have also worked on research on deep foundation models for (astro)physics at PolymathicAI and Flatiron Institute (USA).
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2025-06-12
今週の論文Week 3, June 2025
Title: Charge symmetry breaking effects of $ω$-$ρ^0$ mixing in relativistic mean-field model Author: Yusuke Tanimura, Tomoya Naito, Hiroyuki Sagawa, Myung-Ki Cheoun arXiv: http://arxiv.org/abs/2506.06629v1 Title: Revealing long-term multi-factor climate impacts on antarctic phytoplankton: a trend-based approach using STL and piecewise SEM Author: Hitomi Tanaka, Hideyuki Doi, Ryosuke Iritani Journal Reference: bioRxiv doi: https://doi.org/10.1101/2025.06.03.657605 Title: Free Probability approach to spectral and operator statistics in Rosenzweig-Porter random matrix ensembles Author: Viktor Jahnke, Pratik Nandy, Kuntal Pal, Hugo A. Camargo, Keun-Young Kim arXiv: http://arxiv.org/abs/2506.04520v1
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2025-06-12
プレスリリース
空間的な生物多様性を推論するための理論を構築 －生物多様性の地域間の違いや増減を定量評価－
理化学研究所（理研）数理創造研究センター 数理基礎部門の入谷 亮介 上級研究員、京都大学 大学院農学研究科の辰巳 晋一 准教授らの国際共同研究グループは、空間的な生物多様性の確率分布を推定するための理論を構築しました。本理論は、生物種の在・不在をファジー集合理論の枠組みを用いて表現し、理論物理学で用いられる手法や数学的概念を駆使して解析を行った学際的研究成果です。 本成果は、生息する生物種数の地域間の違いやその増減を定量評価し、生物圏における環境変動が生物多様性に及ぼす影響を予測することに貢献すると期待されます。 詳細は関連リンクをご覧下さい。
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2025-06-12
今週の注目人物
Self-introduction: Robert Baird
Hi, I'm Robert Baird. I'm from the UK and completed my undergraduate degree Zoology at the University of Sheffield, followed by a Masters in Biology at LMU Munich in Germany. I then completed my PhD in Evolutionary Biology at the University of Edinburgh. I'm currently a postdoctoral scientist at the Whitehead Institute for Biomedical Science at MIT, where I combine cytology with evolution to understand species with unusual genetics and what this can tell us about more fundamental biological questions. I am a visiting researcher at iTHEMS, working with Thomas Hitchcock to try to develop ideas and predictions for how some of the unusual genetic systems that I study evolved.
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2025-06-12
セミナーレポート
iTHEMS Theoretical Physics Seminar by Wu Xianxin on June 5, 2025
On June 5, Prof. Xianxin Wu (the Institute of theoretical Physics, Chinese Academy of Sciences) delivered a seminar hosted by RIKEN iTHEMS, where he presented an overview of recent experimental advances in kagome metals. His talk highlighted key phenomena such as unconventional superconductivity, charge density wave (CDW) order, and electronic nematicity. Particularly noteworthy was the growing body of evidence indicating spontaneous time-reversal symmetry (TRS) breaking within the CDW phase—potentially signaling the emergence of a long-sought loop current order, although its microscopic origin remains unresolved. Following this overview, he discussed an effective theoretical model that captures the unique sublattice texture associated with van Hove singularities in the kagome lattice. This sublattice structure plays a crucial role in shaping correlated electronic states. To conclude the seminar, Xianxin proposed a theoretical scenario for the emergence of a TRS-breaking CDW in kagome systems and explored the possibility of unconventional superconducting pairing mediated by loop-current fluctuations. Reported by Ching-Kai Chiu and Congcong Le
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2025-06-05
今週の論文Week 2, June 2025
Title: Insights in $f(Q)$ cosmology: the relevance of the connection Author: Ismael Ayuso, Mariam Bouhmadi-López, Che-Yu Chen, Xiao Yan Chew, Konstantinos Dialektopoulos, Yen Chin Ong arXiv: http://arxiv.org/abs/2506.03506v1 Title: Anomaly of conserved and nonconserved axial charges in Hamiltonian lattice gauge theory Author: Yoshimasa Hidaka, Arata Yamamoto arXiv: http://arxiv.org/abs/2506.01336v1 Title: A New State of Matter between the Hadronic Phase and the Quark-Gluon Plasma? Author: Yuki Fujimoto, Kenji Fukushima, Yoshimasa Hidaka, Larry McLerran arXiv: http://arxiv.org/abs/2506.00237v1 Title: Asteroseismology and Universal Relations in Neutron Stars with Gravitationally Bound Dark Matter Author: Ankit Kumar, Hajime Sotani arXiv: http://arxiv.org/abs/2506.00311v1 Title: Monte Carlo simulations of relativistic shock breakout from a stellar wind Author: Hirotaka Ito, Amir Levinson, Ehud Nakar, Shigehiro Nagataki arXiv: http://arxiv.org/abs/2506.01398v1 Title: Prehistoric genomes from Yunnan reveal ancestry related to Tibetans and Austroasiatic speakers Author: Tianyi Wang, Melinda A. Yang, Zhonghua Zhu, Minmin Ma, Han Shi, Leo Speidel, Rui Min, ..., Mark Stoneking, Qiaomei Fu Journal Reference: Science 388, eadq9792 (2025) doi: https://doi.org/10.1126/science.adq9792 Title: Ancient Borrelia genomes document the evolutionary history of louse-borne relapsing fever Author: Pooja Swali, Thomas Booth, Cedric C. S. Tan, Jesse McCabe, Kyriaki Anastasiadou, Christopher Barrington, Matteo Borrini, Adelle Bricking, Jo Buckberry, Lindsey Büster, Rea Carlin, Alexandre Gilardet, Isabelle Glocke, Joel D. Irish, Monica Kelly, Megan King, Fiona Petchey, Jessica Peto, Marina Silva, Leo Speidel, Frankie Tait, Adelina Teoaca, Satu Valoriani, Mia Williams, Richard Madgwick, Graham Mullan, Linda Wilson, Kevin Cootes, Ian Armit, Maximiliano G. Gutierrez, Lucy van Dorp, and Pontus Skoglund Journal Reference: Science 388, eadr2147 (2025) doi: https://doi.org/10.1126/science.adr2147 Title: High-resolution genomic history of early medieval Europe Author: Leo Speidel, Marina Silva, Thomas Booth, Ben Raffield, Kyriaki Anastasiadou, Christopher Barrington, Anders Götherström, Peter Heather & Pontus Skoglund Journal Reference: Nature 637, 118–126 (2025) doi: https://doi.org/10.1038/s41586-024-08275-2
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2025-06-05
受賞情報
Kenji Fukaya Wins 2025 Shaw Prize in Mathematical Sciences
Our iTHEMS former colleague, Kenji Fukaya, has been awarded the 2025 Shaw Prize in Mathematical Sciences" for his pioneering work on symplectic geometry, especially for envisioning the existence of a category — nowadays called the Fukaya category — consisting of Lagrangians on a symplectic manifold, for leading the monumental task of constructing it, and for his subsequent ground-breaking and impactful contributions to symplectic topology, mirror symmetry, and gauge theory.” Congratulations, Kenji!
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2025-06-04
今週の注目人物
Self-introduction: Antoine Diez
Hello! I am interested in the mathematical modeling of large scale self-organized phe- nomena in life science, from the dynamics of biological cells forming tissues to the behaviour of interacting agents within societies. These systems, often referred to as complex systems, are typically described as large systems of active particles. Their understanding mostly relies on the derivation and analysis of suitable scaling limits that reveal more informative statistical descriptors. My background is in mathematical kinetic theory, a branch of statistical physics originally developed to bridge the gap between molecular-level gas dynamics and macroscopic thermodynamic and fluid equations. My work combines analytical approaches (in particular partial differential equations, stochastic analysis and a bit of geometry) but also in silico computer simulations that are nowdays essential. I am interested in theoretical mathematical problems but I also work in close collaboration with biologists on interdisciplinary applied projects, especially in developmental biology.
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2025-06-04
今週の注目人物
Self-introduction: Unashish Mondal
Hey everyone, I’m Unashish Mondal. I joined iTHEMS and the Prediction Science Research Team as a postdoctoral researcher, with a strong interest in extreme weather events and their underlying dynamics. My research primarily focuses on understanding and predicting lightning, thunderstorms, and associated hazards across the Indian subcontinent, using a combination of satellite observations, reanalysis data, and advanced modelling techniques. I’ve also worked extensively with the Weather Research and Forecasting (WRF) model to simulate cloudbursts, hailstorms, and heatwaves over India, integrating high-resolution simulations with observational analysis. I’m passionate about advancing the prediction of extreme events through data assimilation, machine learning, and high-resolution modelling—especially in data-sparse and climate-vulnerable regions. Outside of research, I enjoy reading books, traveling, and discussing philosophy and culture.
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2025-06-04
今週の注目論文
Understanding dynamics and quantum chaos through Krylov space
In everyday life, we often associate chaos with randomness, disorder, or unpredictability—phenomena that appear to lack any discernible pattern. However, from a physics standpoint, understanding chaos requires a more rigorous and precise mathematical framework. In classical physics, chaos is often perceived through its sensitive dependence on initial conditions. Small perturbations in an initial state of a system can lead to vastly different outcomes over time, a behavior commonly known as “butterfly effect”, and typically analyzed within the framework of phase space trajectories, and its detailed topological properties. In contrast, chaos in the quantum realm presents unique challenges. The notion of sharp trajectories in phase space clashes with Heisenberg’s uncertainty principle in quantum mechanics, and initial perturbations cannot be treated in a way that mirrors classical intuition. As a result, quantum chaos requires distinct formulations, relying on diagnostic tools like spectral statistics, out-of-time-order correlators, and entanglement measures. However, the relationships between these different probes are not always clear, and a unified understanding remains an open area of research. In recent years, significant progress has been made in understanding quantum chaos through the lens of operator growth, where localized quantum information encoded in simple operators spreads across a system—a process known as information scrambling. Such phenomena is crucial in understanding the thermalization of a system. Krylov space, a subspace of the operator Hilbert space, provides an elegant framework to describe such operator growth. By decomposing operator dynamics using an orthonormal basis, it traces how simple operators evolve into increasingly complex ones—quantified by a complexity measure in Krylov space. A parallel formulation exists for the evolution of quantum states, offering a complementary perspective. Importantly, to make these ideas applicable to realistic physical scenarios, one must consider open quantum systems—systems that interact with their environment. In such contexts, the dynamics become richer, requiring more generic theoretical and computational techniques. Furthermore, efficient quantum control protocols often leverage the structured Hilbert space, with Krylov subspace methods providing computationally efficient frameworks. These methods facilitate guiding systems along desired adiabatic trajectories, reducing runtime and mitigating decoherence effects, as often required for quantum technologies. These developments form the core focus of this review article.
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2025-06-03
プレスリリース
もつれ合うプラズマの渦と流れを『情報』で読み解く - 量子情報理論にヒントを得た乱流構造の解析手法 -
仲田資季 客員研究員を含む研究チームは、量子力学の理論で活用される情報量(情報エントロピー)やその数学的記述法に着想を得て、「情報量の視点」で乱流の状態遷移や相互作用を読み解く新しい解析手法を考案しました。これにより、従来のエネルギー解析では見逃されていたプラズマ中の新たな乱流状態の発見や、大小さまざまな渦や流れの間の重要な相互作用の検出などが可能になりました。また、乱流やゆらぎを観測する実験計測への応用も提案しています。 今後はプラズマ乱流のみならず、大気・海洋・社会システムなど、さまざまな“複雑な流れ”や“多数の物理量が連動するゆらぎ”が存在する研究対象への応用展開も期待されます。 詳細は、関連リンクより、プレスリリースをご覧下さい。
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2025-05-30
今週の注目人物
Self-introduction: Vladimir Sosnilo
Hi all, my name is Vladimir (Vova) Sosnilo. I am a mathematician working in the fields of category theory, homotopy theory, and algebraic geometry. Category theory studies abstract relations between mathematical objects. In a precise mathematical sense, the Yoneda Lemma asserts that a given (mathematical) object is determined by its relations to other objects. While this means that any mathematical phenomenon can, in principle, be understood from the perspective of category theory, these relations can be incredibly intricate. The main idea unifying most of my work is the existence of simple categorical patterns that show up across many different areas of mathematics. This can be used to understand concrete objects in geometry and representation theory. I am originally from Saint Petersburg, Russia, but I also spent a significant amount of time in Germany before coming to iTHEMS. In particular, I did a three-year postdoc at the University of Regensburg. Beyond research, I am interested in music and arts. You can find more about me on my webpage or by talking to me!
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2025-05-29
今週の論文Week 5, May 2025
Title: Incorporating episodic memory into quantum models of judgment and decision Author: Jerome R. Busemeyer, Masanao Ozawa, Emmanuel M. Pothos, Naotsugu Tsuchiya arXiv: http://arxiv.org/abs/2505.21521v1 Title: Nonperturbative Quantum Gravity in a Closed Lorentzian Universe Author: Yasunori Nomura, Tomonori Ugajin arXiv: http://arxiv.org/abs/2505.20390v1 Title: Parametrized Tidal Dissipation Numbers of Non-rotating Black Holes Author: Hajime Kobayashi, Shinji Mukohyama, Naritaka Oshita, Kazufumi Takahashi, Vicharit Yingcharoenrat arXiv: http://arxiv.org/abs/2505.19725v1 Title: Notes on Rindler wave packets in Minkowski spacetime Author: Shono Shibuya, Sotaro Sugishita arXiv: http://arxiv.org/abs/2505.20078v1 Title: Emergence of new oscillation modes in dark matter admixed neutron stars Author: Hajime Sotani, Ankit Kumar arXiv: http://arxiv.org/abs/2505.18800v1 Title: Time-dependent Hole States in Multiconfigurational Time-Dependent Hartree-Fock Approaches: Applications in Photoionization of Water Molecule Author: Zhao-Han Zhang, Yang Li, Himadri Pathak, Takeshi Sato, Kenichi L. Ishikawa, Feng He arXiv: http://arxiv.org/abs/2505.11319v1 Title: Time-dependent Hole States in Multiconfigurational Time-Dependent Hartree-Fock Approaches: A Time-Domain Generalization of Extended Koopmans' Theorem Author: Zhao-Han Zhang, Yang Li, Himadri Pathak, Takeshi Sato, Kenichi L. Ishikawa, Feng He arXiv: http://arxiv.org/abs/2505.11290v1
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2025-05-27
セミナーレポート
iTHEMS Theoretical Physics Seminar by Masashi Kawahira on May 27, 2025
On May 27, Mr. Masashi Kawahira gave a seminar hosted by RIKEN iTHEMS. His talk focused on generalized symmetry and quantum symmetry from Type IIB superstring theory. Recently, generalized symmetries have enabled the systematic analysis of various quantum systems. He discussed global generalized symmetries that appear in the low-energy effective theory of type IIB superstring theory, specifically type IIB supergravity. Specifically, his work is related to the SL(2,ℤ) gauge symmetry (self-duality) in type IIB supergravity. He demonstrated that a global ℤ₁₂ eight-form symmetry emerges as the quantum symmetry of the SL(2,ℤ) gauge symmetry, along with its topological operator and its connection to 7-branes. Reported by Okuto Morikawa
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2025-05-26
今週の注目人物
Self-introduction: Chi-Kang Chang
My research field is algebraic geometry, with a particular focus on birational geometry. Before joining RIKEN iTHEMS, I was a postdoctoral researcher at the National Center for Theoretical Sciences (NCTS) in Taiwan for about nine months. I completed all of my undergraduate, master's, and doctoral studies in the Department of Mathematics at National Taiwan University. During my doctoral studies, I also spent about 14 months as a visiting research associate at the Graduate School of Mathematical Sciences, the University of Tokyo.
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2025-05-26
セミナーレポート
Quantum Computation SG Seminar by Alberto Nocera on May 23, 2025
On May 23, 2025, the Quantum Computation Study Group hosted a seminar featuring Dr. Alberto Nocera, an author on the recent Science publication that propelled D-Wave’s quantum annealer into the international spotlight. This event was held online and attracted approximately 30 participants, who engaged actively throughout the session. Dr. Nocera delivered a highly pedagogical talk introducing the D-Wave quantum annealer and its unique approach to quantum simulation. One of the highlights of his presentation was a clear explanation of why, given the short coherence time in D-Wave’s devices, quantum states cannot adiabatically evolve. Instead, a quench of the quantum states is essential, which presents major simulation challenges for classical computers—especially at large scales. In contrast, D-Wave’s quantum annealer demonstrates the capacity to efficiently scale up such quantum quenches. The seminar was highly interactive, with numerous questions raised both during and after the presentation. The lively Q&A underscored the community’s keen interest in the future of quantum simulation and the practical capabilities of current quantum hardware. Overall, Dr. Nocera’s talk provided valuable insights into the rapidly evolving landscape of quantum computation and demonstrated the vital role of quantum annealers in tackling problems beyond the reach of classical computing. Reported by Ching-Kai Chiu and Shunji Matsuura
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2025-05-22
研究・研究者紹介
理研-バークレーセンターで国際的かつ異分野のコラボレーションを - 金久保 優花
「明日、渡米します」。そう話す金久保優花さんは、2024年10月、特別研究員・理研-バークレー フェローとしてiTHEMSに着任しました。専門は素粒子・原子核理論です。iTHEMSのサテライトオフィスである理研-バークレーセンターに長期滞在して研究を進めます。「私にとって完璧なポジション」と金久保さんは言います。その理由を、これまでの歩みとともに伺いました。 記事全文は関連リンクからご覧ください。
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2025-05-22
受賞情報
Yoshimasa Hidaka received the 25th Soryushi Medal for his unified description of the Nambu-Goldstone theorem
Yoshimasa Hidaka, our Deputy Director, is awarded 25th SORYUSHI MEDAL (Paricle Physics Medal) from Japanese Particle Theory Community. The title of the achievement is “Unified Description of the Nambu-Goldstone Theorem”. The award will be presented at the 80th Annual Meeting of the Physical Society of Japan, to be held at Hiroshima University from September 16 to 19, 2025. Congratulations!!
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2025-05-22
今週の論文Week 4, May 2025
Title: Quasinormal Modes from EFT of Black Hole Perturbations in Vector-Tensor Gravity Author: Shogo Tomizuka, Hajime Kobayashi, Naritaka Oshita, Kazufumi Takahashi, Shinji Mukohyama arXiv: http://arxiv.org/abs/2505.15125v1 Title: Cobordism maps in Khovanov homology and singular instanton homology I Author: Hayato Imori, Taketo Sano, Kouki Sato, Masaki Taniguchi arXiv: http://arxiv.org/abs/2505.12095v1 Title: Using inclusive fitness and eco-evolutionary theory to model cultural evolution Author: Ryosuke Iritani, Stuart A West Journal Reference: Evolution and Human Behavior 46 (2025) doi: https://doi.org/10.1016/j.evolhumbehav.2025.106693 Title: The evolution of host utilization strategy: At what timing parasitoids attack and consume their host Author: Ryuichiro Isshiki, Ryosuke Iritani Journal Reference: bioRxiv doi: https://doi.org/10.1101/2025.02.22.639661 Title: How can interspecific pollen transfer affect the coevolution and coexistence of two closely related plant species? Author: Keiichi Morita, Akira Sasaki, Ryosuke Iritani Journal Reference: OIKOS e11133 (2025) doi: https://doi.org/10.1002/oik.11133 Title: An Analytic Prescription for $t$-channel Singularities Author: Kento Asai, Nagisa Hiroshima, Joe Sato, Ryusei Sato, Masaki J. S. Yang arXiv: http://arxiv.org/abs/2505.10890v1 Title: Landscape of Correlated Orders in Strained Bilayer Nickelate Thin Films Author: Congcong Le, Jun Zhan, Xianxin Wu, Jiangping Hu arXiv: http://arxiv.org/abs/2501.14665v2
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2025-05-22
受賞情報
Haruki Emori received the “Second Prize”
Our colleague Haruki Emori (Junior Research Associate, iTHEMS) has received the “Second Prize’” in the Poster Session for the Quantinuum 2025 May Training Session. The outstanding presentation poster is entitled “Quantum algorithm for implementing arbitrary quantum instruments based on parameterized quantum circuits”. Congratulations, Haruki!
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2025-05-22
セミナーレポート
Report on the seminar “Universality class for driven interfaces and... integrable spin hydrodynamics?” by Kazumasa A. Takeuchi on May 19, 2025
On 19 May 2025, Professor Kazumasa A. Takeuchi (Univ. of Tokyo) gave an iTHEMS hybrid seminar, “Universality class for driven interfaces and… integrable spin hydrodynamics?” He first gave a review of the one-dimensional KPZ universality class, highlighting exact Tracy–Widom statistics, geometry-dependent subclasses, and elegant experiments with electrically driven nematic-liquid-crystal fronts. A “KPZ Huygens principle” was proposed to unify these results. He then unveiled a recent surprise: equilibrium fluctuations of isotropic integrable spin chains display KPZ-type scaling. Two-point correlations match KPZ predictions, though non-2pt quantities are totally different. Approximately 60 participants, including those on Zoom, attended the seminar, and the Q&A session was lively and engaging. Reported by Yoshimasa Hidaka
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2025-05-20
研究・研究者紹介
“のりしろ”を探してつなぐ - 山本 暁久
「ずっと分野と分野の境界領域を歩いてきました」と語る山本暁久 研究員。現在は「医学と数理」に注目し、医師の経験知から法則を見つけ数理で翻訳して、生命現象の理解を深めるとともに医療現場に活かすことを目指しています。ここに至るまでのさまざまな出会い、そして境界領域ならではの面白さや苦労について伺いました。 記事全文は関連リンクからご覧ください。
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2025-05-15
今週の論文Week 3, May 2025
Title: Exponential improvement in quantum simulations of bosons Author: Masanori Hanada, Shunji Matsuura, Emanuele Mendicelli, Enrico Rinaldi arXiv: http://arxiv.org/abs/2505.02553v2 Title: A novel view of the flavor-singlet spectrum from multi-flavor QCD on the lattice Author: Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett, Toshihide Maskawa, Kohtaroh Miura, Hiroshi Ohki, Enrico Rinaldi, Akihiro Shibata, Koichi Yamawaki, Takeshi Yamazaki arXiv: http://arxiv.org/abs/2505.08658v1 Title: Bubble formation in active binary mixture model Author: Kyosuke Adachi arXiv: http://arxiv.org/abs/2505.08637v1 Title: On the validity of the complex Langevin method near the deconfining phase transition in QCD at finite density Author: Shoichiro Tsutsui, Yuhma Asano, Yuta Ito, Hideo Matsufuru, Yusuke Namekawa, Jun Nishimura, Shinji Shimasaki, Asato Tsuchiya arXiv: http://arxiv.org/abs/2505.06551v1 Title: Enhancement of photon emission rate near QCD critical point Author: Yukinao Akamatsu, Masayuki Asakawa, Masaru Hongo, Mikhail Stephanov, Ho-Ung Yee arXiv: http://arxiv.org/abs/2505.07169v1 Title: The Moon as a Cosmic-Ray Spectrometer: Prospects for MeV Gamma-Ray Observations Author: Tatsuki Fujiwara, Ellis R. Owen, Yoshiyuki Inoue, Manel Errando, Kohei Fukuda, Kazuhiro Nakazawa, Hirokazu Odaka, Keigo Okuma, Kentaro Terada, Naomi Tsuji, Yasunobu Uchiyama, Hiroki Yoneda, Ao Zhang arXiv: http://arxiv.org/abs/2504.07195v2
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2025-05-15
研究・研究者紹介
究極の目的に向かってあらゆる手法を駆使して挑む - 本多 正純
宇宙における究極の構成要素は何か。宇宙を支配する究極の物理法則は何か。宇宙はどのように始まったのか。こうした謎の解明を目指す素粒子理論が、本多正純さんの専門です。本多さんがiTHEMSに至る道のりと、研究の手法や分野の広がり、そして量子コンピュータを素粒子理論に応用しようという最新の研究について、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。
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2025-05-14
今週の注目人物
Self-introduction: Shuntaro Aoki
Hello, My name is Shuntaro Aoki, and I am a researcher at RIKEN iTHEMS. My primary areas of expertise are particle physics and cosmology, with a special focus on the early universe. I obtained my PhD from Waseda University in 2018 and worked as a lecturer at the same institution until March 2021. In April 2021, I joined Chung-Ang University in Korea, where I worked until August 2022. Subsequently, I continued my research at the Institute for Basic Science (Korea) until November 2024, before joining RIKEN iTHEMS in December 2024. My current research focuses on the cosmological collider program, which aims to uncover new physics beyond the Standard Model through the study of non-Gaussianity in primordial perturbations. These perturbations, believed to have been generated in the early universe at extremely high energies, provide valuable insights into heavy particles that are inaccessible in terrestrial experiments. Specifically, I have been working on the theoretical aspects of the cosmological collider, such as deriving analytic expressions for correlation functions and exploring particle physics models that predict large "signals" of interest. This research lies at the intersection of cosmology and particle physics, offering exciting implications for both fields. My long-term goal is to contribute to uncovering high-energy physics through cosmological observations. Ultimately, I aim to deepen our understanding of the universe's fundamental nature and its origins, while fostering new methodologies and collaborative efforts to advance the field. Beyond research, I enjoy football, fishing, and walking—activities that help me maintain a balanced and creative approach to problem-solving.
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2025-05-14
今週の注目人物
Self-introduction: Iao-Fai Io
Hello everyone, my name is Iao-Fai Io, you can call me Jacky (my nickname). I am a Ph.D. student at National Taiwan University (NTU) and also an IPA student at RIKEN iTHEMS. Although I study in Taiwan, I am originally from Macau, so I know how to speak cantonese and mandarin My research direction is condensed matter physics, specifically focusing on non-Hermitian systems, particularly one-dimensional lattice models (e.g., the SSH model and its extended versions). Currently, I am studying conformal symmetry in 1+1D non-Hermitian systems, including both lattice models and field theory, to understand the differences between Hermitian and non-Hermitian cases and to explore new physics in non-Hermitian systems. I am also interested in other topics in condensed matter theory, including topological insulators and superconductors.
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2025-05-13
今週の注目人物
Self-introduction: Daichi Takeda
My name is Daichi Takeda. I was born in Himeji (Hyōgo Prefecture), and have also lived in Fujisawa (Kanagawa) and Kyoto (Kyoto). I spent nine years at Kyoto University — from my undergraduate studies through my doctoral program — and received a Ph.D. in Science in March 2024. My field is theoretical high energy physics, with a focus on exploring the microscopic theory of gravity. Recently, I have been investigating the properties of black holes and methods for conducting virtual gravity experiments in a laboratory setting, with the help of the holographic principle.
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2025-05-13
今週の注目人物Self-introduction: Dorothy Ellis
Hello! I'm Dorothy Ellis. I received my PhD in biostatistics from the University of Florida in August 2023 and joined the Laboratory for Integrative Genomics at RIKEN IMS in October 2023 as a postdoctoral researcher. I was concurrently appointed to iTHEMS in May 2025. My primary research interest is in developing machine learning and data analysis methods (especially unsupervised analysis methods) for multi-omics data.
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2025-05-09
セミナーレポート
iTHEMS Theoretical Physics Seminar by Nagare Katayama on May 9, 2025
On May 9, Mr. Nagare Katayama gave a seminar hosted by RIKEN iTHEMS. His talk focused on 2d Cardy-Rabinovici model with the modified Villain lattice formulation. One of the most famous scenarios of the quark confinement problem is the dual superconductor picture. In this picture, the quark confinement is induced by monopole condensation. Still, in the theory with a θ term, we expect that monopole and dyon condensation is induced, as suggested by Cardy and Rabinovici through their intuitive arguments. He discussed that the Witten effect of the theory of two-dimensional compact bosons with the θ term is examined using a modified Villain-type lattice theory that can treat the θ term and dion rigorously. In addition, he constructed the 2d Cardy-Rabinovici model and analyzed the phase diagram through the scaling dimension argument and the anomaly matching constraint. Reported by Okuto Morikawa
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2025-05-08
今週の論文Week 2, May 2025
Title: ASURA-FDPS-ML: Star-by-star Galaxy Simulations Accelerated by Surrogate Modeling for Supernova Feedback Author: Keiya Hirashima, Kana Moriwaki, Michiko S. Fujii, Yutaka Hirai, Takayuki R. Saitoh, Junnichiro Makino, Ulrich P. Steinwandel, Shirley Ho arXiv: http://arxiv.org/abs/2410.23346v2 Title: Pole-Expansion of Two-Hadron Imaginary-Time Correlation Function -a new method of analysis for unstable states in lattice QCD- Author: Wren Yamada, Osamu Morimatsu, Toru Sato, Koichi Yazaki arXiv: http://arxiv.org/abs/2505.02878v1 Title: Smooth concordance of cables of the figure-eight knot Author: Sungkyung Kang, JungHwan Park, Masaki Taniguchi arXiv: http://arxiv.org/abs/2505.03720v1 Title: Unified exact WKB framework for resonance -- Zel'dovich and complex-scaling regularizations Author: Okuto Morikawa, Shoya Ogawa arXiv: http://arxiv.org/abs/2505.02301v1 Title: Symmetry-adapted sample-based quantum diagonalization: Application to lattice model Author: Kosuke Nogaki, Steffen Backes, Tomonori Shirakawa, Seiji Yunoki, Ryotaro Arita arXiv: http://arxiv.org/abs/2505.00914v1 Title: Shear and bulk viscosity for a pure glue theory using an effective matrix model Author: Manas Debnath, Ritesh Ghosh, Najmul Haque, Yoshimasa Hidaka, Robert D. Pisarski arXiv: http://arxiv.org/abs/2504.20138v1
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2025-05-01
セミナーレポート
From Quarks to Neutron Stars: Insights from kHz gravitational waves on April 23, 2025
This conference focused on the role of high-frequency gravitational waves in advancing multi-messenger astrophysics. Key topics included binary neutron star mergers, such as GW170817, and future prospects for observing core-collapse supernovae using electromagnetic signals, neutrinos, and gravitational waves. Discussions highlighted the importance of kilohertz-band gravitational waves in probing the dense interiors of neutron stars, where exotic matter may exist. The seminar also introduced new detector concepts like NEMO in Australia and planned KAGRA upgrades aimed at enhancing high-frequency sensitivity. The event featured expert talks and posters, promoting collaboration and new research directions in nuclear and neutron star physics. Reported by Shuntaro Aoki
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2025-05-01
今週の論文Week 1, May 2025
Title: High energy extragalactic multimessenger backgrounds from starburst and dead galaxies Author: Ellis R. Owen, Yoshiyuki Inoue, Tatsuki Fujiwara, Albert K. H. Kong arXiv: http://arxiv.org/abs/2504.18721v1 Title: Lindblad dynamics in holography Author: Takanori Ishii, Daichi Takeda arXiv: http://arxiv.org/abs/2504.17320v1 Title: Explosive production of Higgs particles and implications for heavy dark matter Author: Seishi Enomoto, Nagisa Hiroshima, Kohta Murase, Masato Yamanaka arXiv: http://arxiv.org/abs/2504.17127v1 Title: FRG analysis for relativistic BEC in arbitrary spatial dimensions Author: Fumio Terazaki, Kazuya Mameda arXiv: http://arxiv.org/abs/2504.17668v1
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2025-04-24
今週の論文Week 4, April 2025
Title: Cosmic ray neutrons in magnetized astrophysical structures Author: Ellis R. Owen, Yoshiyuki Inoue, Tatsuki Fujiwara, Qin Han, Kinwah Wu arXiv: http://arxiv.org/abs/2504.15802v1 Title: A magnetar powers the luminous supernova 2023pel, associated with a long gamma-ray burst Author: L. M. Roman Aguilar, M. M. Saez, K. Ertini, M. C. Bersten arXiv: http://arxiv.org/abs/2504.11414v1 Title: Performance guarantees of light-cone variational quantum algorithms for the maximum cut problem Author: Xiaoyang Wang, Yuexin Su, Tongyang Li arXiv: http://arxiv.org/abs/2504.12896v1 Title: Computing $n$-time correlation functions without ancilla qubits Author: Xiaoyang Wang, Long Xiong, Xiaoxia Cai, Xiao Yuan arXiv: http://arxiv.org/abs/2504.12975v1
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2025-04-23
ホットトピック
iTHEMS x academist online event was held on April 19, 2025
iTHEMS held an online lecture event for the general public with the help of Academist Inc., on April 19, 2025. This year’s speakers were Yuuka Kanakubo, Kan Kitamura, Leo Speidel, and Yuki Yokokura, who delivered clear and easy-to-understand lectures that even middle school students could comprehend. Each speaker also served as a commentator for other lectures and facilitated Q&A sessions based on audience questions. During the lunch break, as part of the lunch program, Director Iso, a physicist, and Prof. Fumiharu Kato, a mathematician, engaged in a discussion about the future possibilities of mathematics, moderated by Ms. Shinozaki. The event was organized and hosted by Ms. Michibayashi and Mr. Katada from Academist, who helped make the event a success. The event was attended by 414 people, and at one point there were over 250 in the audience.
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2025-04-17
今週の論文Week 3, April 2025
Title: Cohomology ring of unitary $N=(2,2)$ full vertex algebra and mirror symmetry Author: Yuto Moriwaki arXiv: http://arxiv.org/abs/2504.09919v1
102件のニュース / 2025年