iTHEMS Cosmology Forum #2 - Stochastic gravitational waves: fossils from the early universe

2024年9月27日(金) 9:00 - 18:00

高橋 慶太郎 (熊本大学 先端科学研究部 教授)
杉村 和幸 (北海道大学 大学院理学院 助教)
神野 隆介 (神戸大学 大学院理学研究科 准教授)
多田 祐一郎 (名古屋大学 高等研究院理学研究科C研 特任助教)

iTHEMS Cosmology Forum Workshop is a series of short workshops, each focused on an emerging topics in cosmology. The targeted audience is cosmologists, high-energy physicists and astronomers interested in learning about the subject, not just those who have already worked on the topic. The goal of the workshop is to provide working knowledge of the topic and leave dedicated time for discussions to encourage mutual interactions among participants. The second workshop is devoted to explanations of the stochastic gravitational wave background (SGWB). The SGWB is a significant detection of GW from pulsar timing arrays. The origin of this background could be either supermassive black holes or primordial. Surprisingly, both of these early Universe mechanisms are not well understood. This one-day workshop gathers both the observational and theoretical aspects of this growing topic. The workshop will be in English. The workshop venue will be either at Main Research Building #435-437 or at Okochi Hall, and we will decide and announce which one will be actually used after the registration is closed. The workshops are organised by the iTHEMS Cosmology Forum working group, which is the successor of the Dark Matter Working Group at RIKEN iTHEMS. Invited Speakers: Keitaro Takahashi (Kumamoto University) TBA Kazuyuki Sugimura (Hokkaido University) Supermassive black hole formation Ryusuke Jinno (Kobe University) First-order phase transitions and gravitational wave production in the early Univers Yuichiro Tada (Nagoya University) Scalar-induced gravitational waves as a cosmological phonograph Time table: 09:00-09:30 -- Opening remarks and coffee 09:30-10:45 -- Takahashi (keynote) 10:45-11:45 -- Sugimura 11:45-13:30 -- Lunch time 13:30-14:30 -- Jinno 14:30-15:30 -- Discussion and coffee 15:30-16:30 -- Tada 16:30-17:30 -- Panel Discussion Organisers: Kohei Hayashi, Nagisa Hiroshima, Derek Inman, Amaury Micheli, Ryo Namba

会場: 研究本館 4階 435-437号室 / 大河内記念ホール

イベント公式言語: 英語

第5回「医学と数理」研究会

2024年9月29日(日) - 30日(月)

We will have the 5th workshop on "Medicine and Math" in Kobe (hybrid style) on Sep. 29-30, 2024. For more information and registration, please visit the related links. Organizers: Akihisa Yamamoto (RIKEN iTHEMS) Tetsuo Hatsuda (RIKEN iTHEMS) Motomu Tanaka (Heidelberg Univ. / Kyoto Univ.) Hiroshi Suito (Tohoku Univ. / RIKEN iTHEMS) Eiryo Kawakami (Chiba Univ. / RIKEN R-IH) Takashi Sakajo (Kyoto Univ. / RIKEN iTHEMS)

会場: 融合連携イノベーション推進棟（IIB） 8階 (メイン会場) / via Zoom

イベント公式言語: 日本語

Third Workshop on Density Functional Theory: Fundamentals, Developments, and Applications (DFT2025)

2025年3月25日(火) - 27日(木)

The density functional theory (DFT) is one of the powerful methods to solve quantum many-body problems, which, in principle, gives the exact energy and density of the ground state. The accuracy of DFT is, in practice, determined by the accuracy of an energy density functional (EDF) since the exact EDF is still unknown. Currently, DFT has been used in many communities, including nuclear physics, quantum chemistry, and condensed matter physics, while the fundamental study of DFT, such as the first principle derivations of an accurate EDF and methods to calculate many observables from obtained densities and excited states. However, there has been little opportunity to have interdisciplinary communication. On December 2022, we had the first workshop on this series (DFT2022) at Yukawa Institute for Theoretical Physics, Kyoto University, and several interdisciplinary discussions and collaborations were started. On February 2024, we had the second workshop on this series (DFT2024) at RIKEN Kobe Campus, and more stimulated discussion occured. To keep and extend collaborations, we organize the third workshop. Since the third workshop, we extend the scope of the workshop to the development and application of DFT as well. In this workshop, the current status and issues of each discipline will be shared towards solving these problems by meeting together among researchers in mathematics, nuclear physics, quantum chemistry, and condensed matter physics. This workshop mainly comprises lectures/seminars on cutting-edge topics and discussion, while sessions composed of contributed talks is also planned.

会場: 融合連携イノベーション推進棟（IIB） 8階

イベント公式言語: 英語