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Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) is an international research program at RIKEN. It facilitates close collaborations among researchers from different disciplines in theoretical, mathematical and computational sciences. The ultimate goal of iTHEMS is to unravel the mystery of the Universe, matter, and life, as well as to solve key problems in modern society through interdisciplinary approaches.
Upcoming Events
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Seminar
Termination of Superradiance from a Binary Companion
June 6 (Tue) at 13:30 - 15:00, 2023
Ms. Huiyu Zhu (Ph.D. Student, Department of Physics, Hong Kong University of Science and Technology, Hong Kong)
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Seminar
Around homogeneous spaces of complex semisimple quantum groups
June 7 (Wed) at 14:00 - 16:30, 2023
Mr. Kan Kitamura (Ph.D. Student, Graduate School of Mathematical Sciences, The University of Tokyo)
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Seminar
Deciphering speciation processes: a mathematical modelling approach to biodiversity patterns
June 8 (Thu) at 10:00 - 11:00, 2023
Dr. Ryo Yamaguchi (Assistant Professor, Department of Advanced Transdisciplinary Sciences, Faculty of Advanced Life Science, Hokkaido University / Postdoctoral Research Fellow, Biodiversity Research Centre, University of British Columbia, Canada)
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Seminar
A Spin on Wave Dark Matter
June 15 (Thu) at 16:00 - 17:30, 2023
Dr. Mustafa Amin (Associate Professor, Department of Physics and Astronomy, Rice University, USA)
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Workshop
iTHEMS Science Outreach Workshop 2023
June 16 (Fri) - 18 (Sun), 2023
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School
g-RIPS-Sendai 2023
June 19 (Mon) - August 8 (Tue), 2023
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Lecture
2nd QGG Intensive Lectures: Large gauge transformation and infrared regularity in the inflationary universe
June 19 (Mon) - 20 (Tue), 2023
Prof. Takahiro Tanaka (Professor, Division of Physics and Astronomy, Graduate School of Science, Kyoto University)
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Workshop
6th Workshop on Virus Dynamics
July 4 (Tue) - 6 (Thu), 2023
Prof. Catherine Beauchemin (Deputy Program Director, iTHEMS)
Prof. Shingo Iwami (Professor, Graduate School of Science, Nagoya University) -
Seminar
A dynamical model for IRAS 00500+6713: the remant of a type Iax supernova SN1181 hosting a double degenerate merger product WD J005311
July 7 (Fri) at 14:00 - 15:15, 2023
Mr. Takatoshi Ko (Ph.D. Student, Research Center for the Early Universe (RESCEU), The University of Tokyo)
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Colloquium
The eyes have it: Influenza virus infection beyond the respiratory tract
July 11 (Tue) at 14:00 - 15:30, 2023
Dr. Jessica Belser (Research Microbiologist, Influenza Division, US Centers for Disease Control and Prevention (CDC), USA)
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Lecture
Higher Algebra in Geometry
July 31 (Mon) - August 10 (Thu), 2023
Dr. Hiro Lee Tanaka (Assistant Professor, Department of Mathematics, Texas State University, USA)
Opportunities
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Call for RIKEN ECL Unit Leaders (Sechi Kato Program) – RIKEN Early Career Leaders Program (FY 2024)
Deadline: June 26, 2023
RIKEN offers junior Principal Investigator (PI) positions, RIKEN ECL Unit Leaders (ECL Unit Leaders), for exceptionally talented female researchers for a maximum of 5 years. The purpose of this program is to provide excellent young researchers with an opportunity to promote their own unique research independently as a laboratory head, to develop themselves as researchers with international leadership, and to create the next generation of science and technology fields. The ECL Unit Leaders are expected to ambitiously challenge their own unique research topics at the host research centers. This program is open to female researchers in natural and mathematical sciences and can include research areas bordering the humanities and social sciences. -Who was Sechi Kato? – Sechi Kato (1893-1989) was a pioneering female scientist who developed spectrometric analysis of organic materials. She was also the first female Chief Scientist of RIKEN.
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Call for RIKEN ECL Team Leaders (Sechi Kato Program) – RIKEN Early Career Leaders Program (FY 2024)
Deadline: June 19, 2023
RIKEN offers junior Principal Investigator (PI) positions, RIKEN ECL Team Leaders (ECL Team Leaders), for exceptionally talented female researchers for a maximum of 7 years. The ECL Team Leaders are expected to engage in creative and ambitious research in natural and mathematical sciences and can include research areas bordering the humanities and social sciences, by leading their own independent research teams. Proposals intended to resolve urgent issues that humankind faces today are also welcome (for example, the United Nations SDGs).
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Call for RIKEN ECL Unit Leaders – RIKEN Early Career Leaders Program (FY 2024)
Deadline: June 26, 2023
RIKEN offers junior Principal Investigator (PI) positions, RIKEN ECL Unit Leaders (ECL Unit Leaders), for exceptionally talented researchers for a maximum of 5 years. The purpose of this program is to provide excellent young researchers with an opportunity to promote their own unique research independently as a laboratory head, to develop themselves as researchers with international leadership, and to create the next generation of science and technology fields. The ECL Unit Leaders are expected to ambitiously challenge their own unique research topics at the host research centers.
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Call for RIKEN ECL Team Leaders – RIKEN Early Career Leaders Program (FY 2024)
Deadline: June 19, 2023
RIKEN offers junior Principal Investigator (PI) positions, RIKEN ECL Team Leaders (ECL Team Leaders), for exceptionally talented researchers for a maximum of 7 years. The ECL Team Leaders are expected to engage in creative and ambitious research in natural and mathematical sciences and can include research areas bordering the humanities and social sciences, by leading their own independent research teams. Proposals intended to resolve urgent issues that humankind faces today are also welcome (for example, the United Nations SDGs).
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Seeking a few Female Postdoctoral Researchers, Female Research Scientists or Female Senior Research Scientists (W23010)
Deadline: Open until filled
Female Postdoctoral Researcher, Female Research Scientist or Female Senior Research Scientist, a few positions. iTHEMS is seeking a few Female Postdoctoral Researcher(s), Female Research Scientist(s) or Female Senior Research Scientist(s) to conduct theoretical research in the fields of natural sciences, mathematical sciences, or humanities and social sciences. The scope of responsibilities will be commensurate with the applicant's career level. The applicants will be expected not only to pursue top-level research in their field but also to collaborate actively with an interdisciplinary group of researchers across fields such as mathematics, physics, chemistry, life sciences, engineering, computational sciences, information sciences, and humanity and social sciences, under the concept of iTHEMS. For more details, send an email to the contact address below.
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Seeking a few Postdoctoral Researchers (RIKEN-Berkeley Fellow associated with N3AS) (W22284)
Deadline: Open until filled
Postdoctoral Researcher (RIKEN-Berkeley Fellow associated with N3AS), a few positions. Theoretical works associated with neutrino physics, nucleosynthesis, dense matter and neutron stars, dark matter, astrophysical simulations, lattice QCD simulations and related fields. Successful applicants will work and spend the first three months at the RIKEN Wako campus, and the remainder of the years at the RIKEN Berkeley Center at the University of California, Berkeley on a long term business trip. The appointments of the RIKEN Berkeley Fellow are made through RIKEN iTHEMS.
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Seeking Postdoctoral Researcher, Research Scientist and Senior Research Scientist (W22219)
Deadline: Open until filled
Postdoctoral Researcher, Research Scientist and Senior Research Scientist, about 10 in total. Depending on experience, performance and ability, they are employed as postdoctoral researchers (3-year term), research scientists (5-year term) or senior research scientists (7-year term). This call is for researchers to work in iTHEMS in collaboration with one of the following laboratories participating in RIKEN Quantum (work concurrently with one of the following laboratories as needed), and to carry out research in quantum computational science and related fields. RIKEN Quantum aims to promote fundamental science based on quantum computational science, and the successful candidate will not only conduct top-level research on their own topic, but also contribute to building common ground in mathematics, physics, chemistry, life sciences, information sciences, computational science, humanities and social sciences through quantum computational science.
Latest News
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2023-06-01
Paper of the WeekWeek 1, June 2023
Title: Survival Probability of Unstable States in Coupled-Channels -- nonexponential decay of "threshold-cusp" Author: Wren A. Yamada, Osamu Morimatsu, Toru Sato, Koichi Yazaki arXiv: http://arxiv.org/abs/2305.11695v2 Title: Chiral fermion in the Hamiltonian lattice gauge theory Author: Tomoya Hayata, Katsumasa Nakayama, Arata Yamamoto arXiv: http://arxiv.org/abs/2305.18934v1 Title: QCD-Based Charge Symmetry Breaking Interaction and Okamoto-Nolen-Schiffer Anomaly Author: Hiroyuki Sagawa, Tomoya Naito, Xavier Roca-Maza, Tetsuo Hatsuda arXiv: http://arxiv.org/abs/2305.17481v1
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2023-06-01
Seminar ReportQuantum uncertainty of fields and its effect on entanglement generation in quantum particles by Mr. Yuki Sugiyama on May 31, 2023
The unification of gravity and quantum mechanics is one of the important problems. To elucidate the theory of quantum gravity, it is becoming more and more important to get any hint of the quantum nature of gravity. In particular, the quantum-gravity-induced-entanglement of masses (QGEM) scenario, which is expected to observe the quantum nature of non-relativistic gravity, has recently attracted great attention. In this talk, Sugiyama-san showed the effect of relativistic fields on entanglement generation based on quantum field theory. We also discussed the relationship between the entanglement generation and quantum uncertainty of the fields. Reported by Shigehiro Nagataki
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2023-05-31
Seminar ReportiTHEMS Theoretical Physics Seminar by Dr. Masaki Tezuka on May 30, 2023
On May 30, Dr. Masaki Tezuka gave a talk on Spectral correlations and scrambling dynamics in Sachdev-Ye-Kitaev(SYK) type models. He explained his recent studies on quantum chaotic features, quantum scrambling, and connections to holography and quantum error corrections in the SYK-type models. Reported by Yuta Sekino