iTHEMS Weekly News Letter

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iTHEMS Advisory Council (AC) is being held from July 24 (Wed.) through 26 (Fri.)


iTHEMS Advisory Council (AC) is being held from July 24 (Wed.) through 26 (Fri.). On July 25 (Thursday), short talks and poster presentations by iTHEMS researchers have been given, followed by stimulating discussions with the AC members in various different fields (mathematics, physics, astronomy, biology and engineering).
Lively discussion continued during the breaks and poster sessions, with beautiful sweets and coffee/tea prepared by iTHEMS assistants. We are very grateful to the AC members who kindly came over to RIKEN Wako Campus to make precious suggestions
about science activities and the management of iTHEMS.

Upcoming Events


Co-hosted by iTHEMSSUURI-COOL (Kyoto)

RIMS-iTHEMS joint WS on "Math of Jets"

July 29 - 31, 2019

Co-hosted by RIMS Kyoto University and iTHEMS RIKEN.

Venue: Kyoto University, Main Campus Research Bldg No 15, #201

Event Official Language: Japanese


iTHEMS Math Seminar

Complex analysis on a neighborhood of a complex submanifold and its applications

July 30 at 16:00 - 18:10, 2019

Dr. Takayuki Koike (Lecturer, Department of Mathematics, Graduate School of Science, Osaka City University)

Plan of the seminar: we separate each talk into two. In the first 60 minutes the speaker gives an introductory talk for non-mathematicians. After a short break, the second 60 minutes is spent for a bit more detailed talk for mathematicians (working in other areas). We welcome you joining both parts of the seminar or only the first/second half.

Venue: Seminar Room #160, 1F Main Research Building, RIKEN

Event Official Language: English


Dr. Takumi Doi thumbnail


SUURI-COOL (Kyushu) Lecture

July 31 - August 2, 2019

Dr. Takumi Doi (Senior Research Scientist, iTHEMS / Senior Research Scientist, Quantum Hadron Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science (RNC))

SUURI-COOL (Kyushu) at the Ito-campus of Kyushu Univ. will be launched on July 31, 2019. As a first event at SUURI-COOL (Kyushu), the following lecture by Takumi Doi (RIKEN Nishina Center/iTHEMS) will be held. Feel free to join if you will be around Ito-campus.

Venue: SUURI-COOL (Kyushu), Ito Campus, Kyushu University

Event Official Language: English


Math-Life Workshop

August 19 - 20, 2019

Masaharu Nagayama (MSC, Hokkaido Univ.)
Tetsuo Hatsuda (iTHEMS, RIKEN)
Hiroshi Suito (AIMR, Tohoku Univ.)
Takayuki Sakajyo (SACRA, Kyoto Univ.)

Venue: 1F Seminar Room, Frontier Research in Applied Sciences Building, Hokkaido Univ.

Event Official Language: Japanese

Featured Paper of the Week

Dr. Tomoki Ozawa thumbnail

Synthetic dimensions and topological chiral currents in mesoscopic rings


In condensed matter systems, the topological effect of chiral currents is intimately related to two-dimensional systems. Recently emerging concept of "synthetic dimensions" provides a way to explore two-dimensional physics using one dimensional setups by using internal degrees of freedom as an additional dimension. Synthetic dimensions have so far been predominantly developed in atomic and optical physics. In this work, we extend this concept to condensed matter systems of a mesoscopic ring coupled to a nanomagnet. Regarding the spin degrees of freedom of a nanomagnet as a dimension, we interpret a current in the ring, which is locked to the nanomagnet's spin, as chiral edge currents of a two-dimensional quantum Hall system. We thus provide a broader conceptual setting for synthetic dimensions, extending it to a rich domain of potential practical applications in condensed matter systems.

Hannah M. Price, Tomoki Ozawa, Henning Schomerus
"Synthetic dimensions and topological chiral currents in mesoscopic rings"
Phys. Rev. Research 2, 032017 (2020)
doi: 10.1103/PhysRevResearch.2.032017
arXiv: 1907.04231

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