RIKEN Interdisciplinary Theoretical and Mathematical Sciences Program

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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.

About iTHEMS

Upcoming Events

Seminar

Today

Information Theory Study Group

Sampling the stable structures based on replica-permutation method

January 27 at 13:00 - 14:30, 2021

Dr. Hiroshi Yokota (Postdoctoral Researcher, iTHEMS)

When we want to search the (meta)stable structures of the macromolecules such as protein, the combination of molecular dynamics simulation and replica exchange method (REM) is useful. In REM, sampling...more

Event Official Language: English

Seminar

Tomorrow

iTHEMS Biology Seminar

Numerical inference of the molecular origin of the cyanobacterial circadian rhythm

January 28 at 10:00 - 11:00, 2021

Dr. Shin-ichi Koda (Assistant professor, Institute for Molecular Science)

The cyanobacterial clock proteins, KaiA, KaiB, and KaiC, are known as the simplest biological clock; Just by mixing them with ATP in a test tube, self-sustaining oscillation with a nearly 24h temperat...more

Venue: via Zoom

Event Official Language: English

Seminar

Tomorrow

iTHEMS theoretical physics seminar

Many body problems from quarks to stellar evolutions

January 28 at 13:30 - 15:00, 2021

Prof. Nobutoshi Yasutake (Associate Professor, Chiba Institute of Technology)

The many-body problems are major problems that need to be clarified not only in nuclear physics, but also in astronomy. In this seminar, I introduce stellar evolutions as gravitational many-body probl...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS theoretical physics seminar

Quantum kinetic theory for chiral and spin transport in relativistic heavy ion collisions and core-collapse supernovae

February 4 at 13:00 - 14:30, 2021

Dr. Di-Lun Yang (Assistant professor, Faculty of Science and Technology, Keio University)

Recently, the anomalous transport phenomena of relativistic fermions associated with chirality and spin induced by external fields have been greatly explored in different areas of physics. Notably, su...more

Venue: via Zoom

Event Official Language: English

Workshop

Co-hosted by iTHEMS

The 12th RIKEN-Kyoto University Joint Data Assimilation Workshop

February 10 at 13:30 - 16:00, 2021

Language: Japanese/English Participation deadline: Tuesday, February 9, 2021

Venue: via Online

Event Official Language: Japanese

Seminar

iTHEMS theoretical physics seminar

Quantum mechanical description of energy dissipation and application to heavy-ion fusion reactions

February 16 at 13:00 - 14:30, 2021

Mr. Masaaki Tokieda (Graduate students, Department of Physics, Tohoku University)

For theoretical description of heavy-ion fusion reactions, two different models have been used depending on the incident energy. At energies above the Coulomb barrier, importance of energy dissipation...more

Venue: via Zoom

Event Official Language: English

Seminar

DMWG seminar

About the astrometric determination of the phase space structure of Galactic DM

February 16 at 13:30 - 15:00, 2021

Dr. Nobuyuki Sakai (Korea Astronomy and Space Science Institute (KASI))

*Detailed information about the seminar refer to the email.

Venue: via Zoom

Event Official Language: English

Symposium

Co-hosted by iTHEMS

Blockchain in Kyoto 2021

February 17 - 18, 2021

The International Conference on Blockchains and their Applications aims at bringing together researchers and practitioners from various communities of science and technology working on areas related t...more

Venue: partly online

Event Official Language: English

More events Event Calendar

Opportunities

Seeking a Postdoctoral Researcher (W20086) *theoretical physics

Deadline: Open until filled

iTHEMS is seeking a postdoctoral researcher in theoretical physics including condensed matter physics, particle physics and nuclear physics. In particular, the successful applicant is expected to help develop an adiabatic quantum computer (AQC) simulator using time-dependent density matrix renormalization group (DMRG). This project is part of a greater effort in the Berkeley area towards exploring the efficacy of adiabatic quantum computing supported jointly by RIKEN, UC Berkeley, Lawrence Berkeley Lab, and the U.S. Department of Energy. In addition to developing the AQC simulator, the candidate will have the opportunity to pursue top-level research in collaboration with an interdisciplinary group of researchers across fields such as mathematics, physics, chemistry, life sciences, engineering computational sciences, information sciences, and social sciences at iTHEMS, and physics, mathematics and computational sciences at Berkeley.

Seeking a Research Scientist or Senior Research Scientist (W20095) *extreme universe

Deadline: Open until filled

iTHEMS is seeking theorist(s) working on extreme universe including high-energy astrophysics, supernovae, neutron stars, black holes, and early universe. Successful applicant(s) are expected not only to pursue top-level researches in astrophysics but also to lead interdisciplinary collaborations among different fields such as mathematics, physics, chemistry, life sciences, engineering, computational sciences, information sciences, and social sciences, under the concept of iTHEMS. Also, successful applicant(s) are expected to participate in the international collaboration on astrophysics between iTHEMS and the NSF Physics Frontier Center in UC Berkeley established on Sept. 2020.

Seeking a Postdoctoral Researcher (W20122) *ecology and evolutionary biology

Deadline: Open until filled

iTHEMS is seeking postdoctoral researcher(s) in the field of ecology and evolutionary biology (including population genetics, epidemiology, quantitative biology, and bioinformatics). Successful applicant(s) are expected to not only pursue high quality research in their own field but also promote interdisciplinary collaborations among different fields such as mathematics, physics, chemistry, life sciences, engineering, computational sciences, information sciences, and social sciences, under the concept of iTHEMS. This time, we encourage early-career applicants who have a high research potential in pursuing collaboration with Dr. Ryosuke Iritani (ecology and evolution) as well as various iTHEMS-researchers across disciplines. Though your research backgrounds in population-/community-dynamics, stochastic analysis, evolutionary game theory, and stochastic simulations are highly beneficial, we value your research proposal (concreteness, logicality, and realizability of your future plans) more than your past achievements.

Seeking a Postdoctoral Researcher (W20157) *physics of dynamical systems

Deadline: Open until filled

iTHEMS is seeking a postdoctoral researcher to work closely with Catherine Beauchemin in the field of physics of dynamical systems; primarily applied to virophysics. Work will primarily consist in constructing mathematical and computer models describing the dynamics of a viral infection within a host (in vivo) or a cell culture (in vitro). The models are validated against or applied to experimental infection data (e.g., daily virus concentration levels collected over the course of the infection) using Bayesian parameter estimation via a Markov chain Monte Carlo method. The projects are not experimental in nature: the data used in our research is gathered elsewhere by our collaborators or is taken from the literature. Ideal candidates will hold a PhD in Physics (computational, quantum, particle, astro, theoretical) or Applied Mathematics, and have excellent written English skills. No experience with anything to do with biology or virology is required or expected. Fellows should possess programming skills in python (preferably) or C/C++, Octave/Matlab, should already be familiar with or willing to learn the typesetting language LaTeX, be comfortable with a Linux operating system, and have experience in implementing and solving ordinary and partial differential equation systems or cellular automata/agent-based systems.

More opportunities

Latest News

2021-01-25

Seminar Report

Biology Seminar by Dr. Takashi Okada on January 21, 2021

On January 21st, Takashi Okada (RIKEN iTHEMS) gave a talk on Boolean networks at the iTHEMS Biology Seminar. He first introduced the basics of Boolean networks and their applications in Biology, and t...more

2021-01-21

Paper of the Week

Week 4 of January

Title: Second and fourth moments of the charge density and neutron-skin thickness of atomic nuclei Author: Tomoya Naito, Gianluca Colò, Haozhao Liang, Xavier Roca-Maza arXiv: http://arxiv.org/abs/21...more

2021-01-21

Seminar Report

Biology Seminar by Dr. Koichiro Uriu on January 7, 2021

On January 7th, Dr. Koichiro Uriu gave a talk on one of the most important pattern formation in our body. Koichiro was an active member of iTHES, and is currently an assistant professor at Kanazawa Un...more

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