Featured News
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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Lecture
Transforming Industries and Society: The Power of Advanced Math and AI Technologies
December 12 (Tue) at 16:30 - 18:00, 2023
Hirokazu Anai (Principal Research Director, FUJITSU RESEARCH, FUJITSU LED)
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Seminar
Tropical geometry and period integrals
December 13 (Wed) at 14:00 - 16:30, 2023
Yuto Yamamoto (Special Postdoctoral Researcher, iTHEMS)
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Seminar
Plasticity in the endogenous rhythms and the adaptation to the tidal environment in a freshwater snail
December 14 (Thu) at 16:00 - 17:00, 2023
Takumi Yokomizo (JSPS Research Fellow PD, Graduate School of Science, Chiba University)
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Seminar
A symmetry principle for gauge theories with fractons
December 22 (Fri) at 17:00 - 18:15, 2023
Yuji Hirono (Junior Research Group Leader/Assistant Professor, Research Division, Asia Pacific Center for Theoretical Physics, Republic of Korea)
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Lecture
Rapid development of cold-atom quantum computers and their prospect
December 26 (Tue) at 13:30 - 17:00, 2023
Takafumi Tomita (Assistant Professor, Photo-Molecular Science, Institute for Molecular Science)
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Lecture
Introduction to Effective Field Theory and Many-Body Problems
December 27 (Wed) - 28 (Thu), 2023
Masaru Hongo (Assistant Professor, Department of Physics, Faculty of Science, Niigata University)
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Seminar
Application of Modular tensor category to Lattice gauge theory
December 29 (Fri) at 10:30 - 16:00, 2023
Tomoya Hayata (Assistant Professor, Faculty of Economics, Keio University)
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Seminar
Probing structure of neutron stars through X-ray bursters
January 12 (Fri) at 14:00 - 15:15, 2024
Akira Dohi (Special Postdoctoral Researcher, Astrophysical Big Bang Laboratory, RIKEN Cluster for Pioneering Research (CPR))
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Workshop
Second Workshop on Fundamentals in Density Functional Theory (DFT2024)
February 20 (Tue) - 22 (Thu), 2024
Opportunities
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Seeking Research Scientists or Senior Research Scientists (W23178)
Deadline: Open until filled
Research Scientist or Senior Research Scientist, a few positions. iTHEMS is seeking research scientist(s) or senior research scientist(s) as part of its "Mathematical Sciences and Medicine" initiative.
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Seeking Postdoctoral Researcher, Research Scientist and Senior Research Scientist (W23143)
Deadline: Open until filled
Postdoctoral Researcher, Research Scientist or Senior Research Scientist, about 10 positions. This call is open to researchers in any field who wish to participate in RIKEN Quantum.
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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.
Latest News
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2023-12-07
Paper of the WeekWeek 2, December 2023
Title: Improved real-space parallelizable matrix-product state compression and its application to unitary quantum dynamics simulation Author: Rong-Yang Sun, Tomonori Shirakawa, Seiji Yunoki arXiv: http://arxiv.org/abs/2312.02667v1 Title: Oliver Curvature Bounds for the Brownian Continuum Random Tree Author: Christy Kelly arXiv: http://arxiv.org/abs/2312.01894v1
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2023-12-05
Seminar ReportJoint RIKEN/N3AS Workshop on Multi-Messenger Astrophysics on November 26, 2023
The joint RIKEN-Berkeley workshop on Multi-Messenger Astrophysics was held on Nov.26 on the Big Island in Hawaii. More than 40 participants from both sides of the Pacific gathered to discuss nuclear and particle astrophysics. The photo shows a talk by Nobuya Nishimura (RIKEN Nishina Center) on the nucleosynthesis of heavy-elements in supernovae and neutron star mergers, chaired by Wick Haxton (UC Berkeley/iTHEMS). Lively discussions took place during the lectures and poster session. Reported by Tetsuo Hatsuda
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2023-11-30
Paper of the WeekWeek 5, November 2023
Title: Study on Lambda(1405) in the flavor SU(3) limit in the HAL QCD method Author: Kotaro Murakami, Sinya Aoki arXiv: http://arxiv.org/abs/2311.17421v1 Title: Searching for High Frequency Gravitational Waves with Phonons Author: Yonatan Kahn, Jan Schütte-Engel, Tanner Trickle arXiv: http://arxiv.org/abs/2311.17147v1 Title: End-to-end complexity for simulating the Schwinger model on quantum computers Author: Kazuki Sakamoto, Hayata Morisaki, Junichi Haruna, Etsuko Itou, Keisuke Fujii, Kosuke Mitarai arXiv: http://arxiv.org/abs/2311.17388v1 Title: Towards complete characterization of topological insulators and superconductors: A systematic construction of topological invariants based on Atiyah-Hirzebruch spectral sequence Author: Seishiro Ono, Ken Shiozaki arXiv: http://arxiv.org/abs/2311.15814v1 Title: Speed of sound exceeding the conformal bound in dense 2-color QCD Author: Etsuko Itou, Kei Iida arXiv: http://arxiv.org/abs/2311.15259v1 Title: New configuration set of HAL QCD collaboration Author: Etsuko Itou for HAL QCD collaboration arXiv: http://arxiv.org/abs/2311.15522v1 Title: Supernovae Ia and Gamma-Ray Bursts together shed new lights on the Hubble constant tension and cosmology Author: M. G. Dainotti, B. De Simone, G. Montani, E. Rinaldi, M. Bogdan, K. M. Islam, A. Gangopadhyay Journal Reference: PoS(ICRC2023)1367 arXiv: http://arxiv.org/abs/2309.05876v1 Title: Parameter estimation by learning quantum correlations in continuous photon-counting data using neural networks Author: Enrico Rinaldi, Manuel González Lastre, Sergio García Herreros, Shahnawaz Ahmed, Maryam Khanahmadi, Franco Nori, Carlos Sánchez Muñoz arXiv: http://arxiv.org/abs/2310.02309v1 Title: GRB Optical and X-ray Plateau Properties Classifier Using Unsupervised Machine Learning Author: Shubham Bhardwaj, Maria G. Dainotti, Sachin Venkatesh, Aditya Narendra, Anish Kalsi, Enrico Rinaldi, Agnieszka Pollo Journal Reference: MNRAS, Volume 525, Issue 4, pp.5204-5223, November 2023 doi: https://doi.org/10.1093/mnras/stad2593 arXiv: http://arxiv.org/abs/2308.14288v4 Title: Estimating truncation effects of quantum bosonic systems using sampling algorithms Author: Masanori Hanada, Junyu Liu, Enrico Rinaldi, Masaki Tezuka Journal Reference: Mach. Learn.: Sci. Technol. 4 045021, 2023 doi: https://doi.org/10.1088/2632-2153/ad035c arXiv: http://arxiv.org/abs/2212.08546v2 Title: Approximate Autonomous Quantum Error Correction with Reinforcement Learning Author: Yexiong Zeng, Zheng-Yang Zhou, Enrico Rinaldi, Clemens Gneiting, Franco Nori Journal Reference: Phys. Rev. Lett. 131, 050601 (2023) doi: https://doi.org/10.1103/PhysRevLett.131.050601 arXiv: http://arxiv.org/abs/2212.11651v2 Title: MEET: A Monte Carlo Exploration-Exploitation Trade-off for Buffer Sampling Author: Julius Ott, Lorenzo Servadei, Jose Arjona-Medina, Enrico Rinaldi, Gianfranco Mauro, Daniela Sánchez Lopera, Michael Stephan, Thomas Stadelmayer, Avik Santra, Robert Wille arXiv: http://arxiv.org/abs/2210.13545v2
Upcoming Visitors
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Qiang Jia
Research Fellow, School of Physics, Korea Institute for Advanced Study (KIAS), Republic of KoreaTerm: January 9 (Tue) - 11 (Thu), 2024Visiting Place: RIKEN Wako Campus