# Research News

## Di-Omega in QCD on the front page of an in-house magazine

2018-12-13

Di-Omega in QCD reported in the previous iTHEMS NewsLetter became a front page of the latest news letter of "Science and technology companies pension fund".

It is amazing that the pension fund organization is interested in elementary particle physics!

# Hot Topic

## Snapshot of a Discussion

2018-12-13

iTHEMS members have discussions not only on natural science and mathematical science but also on social science and history. Here is a snapshot of a discussion on ancient history of China by Yongjia Huang and Hiro Nagataki at our common room 246-248 on Nov.30, 2018.

# Hot Topic

## The RIKEN-NTU Workshop on Recent Developments of Chiral Matter and Topology

2018-12-13

The RIKEN-NTU Workshop on Recent Developments of Chiral Matter and Topology was held at Centre for Theoretical Physics in National Taiwan Univ. (NTU). on Dec.6-9, 2018.

There were about 80 participants both from particle/nuclear physics and condensed matter physics from Japan, Taiwan, China, and US. There were about 30 scientific talks with very stimulating discussions on chirality and topology from low-energies to high-energies. From RIKEN, A. Furusaki (CPR/CEMS), Y. Hidaka (RNC/iTHEMS), M. Hongo (iTHEMS), N. Nagaosa (CEMS), T. Ozawa (iTHEMS) and T. Hatsuda (iTHEMS) gave talks. The workshop was held in the new building "NTU Cosmology Hall" which was just completed at the north end of the NTU campus in Taipei.

Workshop on Recent Developments of Chiral Matter and Topology

December 6 - 9, 2018

# Upcoming Events

## Math Lecture

### Theory of Operator Algebras (6th)

December 20 at 15:30 - 17:00, 2018

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Title: An introduction to operator algebras

Abstract: Operators are linear maps from a (usually an infinite dimensional) linear space (most frequently the Hilbert space) to itself, which is like matrices of infinite degree. Operators form an algebra by obvious addition and multiplication. Operators appear in most of the fields in mathematics, in algebra, in geometry, in analysis, ... Some of the key words at the beginning of these lectures are "spectral theory" "operator algebras" "Tomita-Takesaki theory". These lectures are for non-professional people.

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

Event Official Language: Japanese

## Lecture

### Universal clusters and Efimov physics

January 8 at 10:30 - 17:00, 2019

Dr. Pascal Naidon (Senior Research Scientist, Quantum Hadron Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science (RNC))

Unlike classical systems, quantum few-body systems can be unbound in the presence of short-range attractive forces. Near the critical strength of the forces at which they can become bound (resonant forces), they exhibit universal properties that are independent of the details of the forces. In this lecture, I will explain in detail the universality of systems with resonant short-range forces, in particular the Efimov effect for 3 or more particles. I will also present the universal properties of systems with power-law interaction forces, such as van der Waals forces that are relevant to neutral atoms.

Venue: Brain Science Ikenohata Research Bldg. (3rd floor, C56)

Event Official Language: English

## Math Lecture

### Theory of Operator Algebras (7th)

January 10 at 10:30 - 12:00, 2019

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Title: An introduction to operator algebras

Abstract: Operators are linear maps from a (usually an infinite dimensional) linear space (most frequently the Hilbert space) to itself, which is like matrices of infinite degree. Operators form an algebra by obvious addition and multiplication. Operators appear in most of the fields in mathematics, in algebra, in geometry, in analysis, ... Some of the key words at the beginning of these lectures are "spectral theory" "operator algebras" "Tomita-Takesaki theory". These lectures are for non-professional people.

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

Event Official Language: Japanese

## Math Lecture

### Introduction to Public-Key Cryptography (7th)

January 18 at 15:00 - 17:00, 2019

Dr. Eren Mehmet Kıral (Visiting Scientist, iTHEMS / Visiting Scientist, Faculty of Science and Technology, Sophia University)

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

Event Official Language: English

## Conference

### The 7th International Symposium on Data Assimilation (ISDA2019)

January 21 - 24, 2019

The symposium will focus on the cross-cutting issues shared in broad applications of data assimilation from geoscience to various physical and biological sciences. In particular, the symposium will enhance discussions among researchers with various background on, for example, non-Gaussian and nonlinear data assimilation problems, Big Data Assimilation (BDA), high-performance computation (HPC), Uncertainty Quantification (UQ), advanced intelligence (AI) and machine learning, multi-scale and multi-component treatments, observational issues, and mathematical problems.

Abstract Submission Deadline: October 14, 2018 at 11:59 p.m. UTC

Registration Deadline: December 16, 2018 at 11:59 p.m. UTC

Submission/Registration Fee: Free

Venue: 6F auditorium, Computational Science Research Building, R-CCS, Kobe Campus, RIKEN

Event Official Language: English

## Workshop

### RIKEN-Berkeley WS on Quantum Information Science (RB19)

January 25 - 29, 2019

Initiated by the RIKEN Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) program at Berkeley, this workshop will focus on the development of quantum computing techniques, quantum

materials, and quantum sensing, as well as their corresponding applications to physical sciences, with an emphasis to galvanize the participants into future collaboration.

ORGANIZING COMMITTEE:

Chia Cheng Chang (RIKEN iTHEMS/UCB/LBNL NSD)

Takumi Doi (RIKEN iTHEMS)

Tetsuo Hatsuda (RIKEN iTHEMS)

Wick Haxton (UCB/LBNL NSD/RIKEN iTHEMS)

Alan Poon (LBNL NSD/BQ)

ADVISORY COMMITTEE:

Jonathan Carter (LBNL CRD/BQ)

Yasunobu Nakamura (RIKEN CEMS/Tokyo)

Franco Nori (RIKEN/Michigan)

Thomas Schenkel (LBNL AT-AP/BQ)

Irfan Siddiqi (UCB/BQ)

Seigo Tarucha (RIKEN CEMS/Tokyo)

Co-hosted by

RIKEN iTHREMS

RIKEN CEMS

Lawrence Berkeley National Lab. (LBNL)

Univ. of California at Berkeley (UCB)

Supported by

Berkeley Quantum (bq)

US Dept. of Energy (DOE)

Venue: Lawrence Berkeley National Laboratory (Berkeley, California)

Event Official Language: English

## Math Lecture

### Theory of Operator Algebras (8th)

March 5 at 14:00 - 15:00, 2019

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Title: An introduction to operator algebras

Abstract: Operators are linear maps from a (usually an infinite dimensional) linear space (most frequently the Hilbert space) to itself, which is like matrices of infinite degree. Operators form an algebra by obvious addition and multiplication. Operators appear in most of the fields in mathematics, in algebra, in geometry, in analysis, ... Some of the key words at the beginning of these lectures are "spectral theory" "operator algebras" "Tomita-Takesaki theory". These lectures are for non-professional people.

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

Event Official Language: Japanese

## Math Lecture

### Theory of Operator Algebras (9th)

March 5 at 15:30 - 16:30, 2019

Dr. Yosuke Kubota (Research Scientist, iTHEMS)

Title: An introduction to operator algebras

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

Event Official Language: Japanese

## Workshop

### Workshop of Nuclear-Astrophysics by UKAKUREN/Japan Forum of Nuclear Astrophysics (JaFNA): Nuclear data & Heavy Element Nucleosynthesis

March 6 - 8, 2019

We are pleased to announce that we will have a meeting on Nuclear-Astrophysics at Hokkaido Univ. Especially this time we will focus on the impact of nuclear data & nucleosynthesis of heavy elements. Gravitational wave is another keyword.

This workshop is held by UKAKUREN (JaFNA), together with Nuclear Reaction Data Centre, Hokkaido University (JCPRG). This workshop is supported by iTHEMS, CNS, RCNP, NAOJ, KEK, and WNSC.

You are welcomed to join us. For registration, please fill in the attached form (in Japanese) and send it to: sec-ukakuren18@kek.jp by 30th November 2018.

We are looking forward to seeing you at Hokkaido U.

Organizers

T. Kajino (Chair), T. Kawabata (Osaka), H. Utsunomiya (Konan), S. Nishimura (RIKEN), H. Yamaguchi (CNS), T.Hayakawa (QST), T.Motobayashi (RIKEN),

K.Terada(Osaka), S.Nagataki(RIKEN), S.Chiba(TIT), T.Tamagawa(RIKEN), W.Aoki(NAOJ), S.Wanajo(AEI), S.Kubono(RIKEN), T.Shima(RCNP)

Venue: Hokkaido University Conference Hall

Event Official Language: Japanese

## Colloquium

### ZetaValue2019-iTHEMS Special Mathematics Colloquium

March 21 at 14:00 - 17:30, 2019

Prof. Kohji Matsumoto (Professor, Nagoya University)

Prof. Jörn Steuding (University of Würzburg, Germany)

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN

Event Official Language: English

## Workshop

### Value distribution of zeta and L-functions and related topics

March 22 - 27, 2019

March 22–26, 2019

Main Conference (invited talks, posters and a limited number of short contributed talks)

Welcome Reception: March 22, 2019 (18:00~20:00)

Conference Dinner: March 25, 2019 (18:30~21:00)

March 27, 2019 (9:30~17:00)

One-day Workshop (a series of short contributed talks by young researchers to facilitate active discussions)

ORGANIZING COMMITTEE

Ade Irma Suriajaya (RIKEN)

Yoshinosuke Hirakawa (Keio University)

Masataka Ono (Kyushu University)

Shin-ichiro Seki (Tohoku University)

Keiju Sono (Ehime University)

Shingo Sugiyama (Nihon University)

Yuta Suzuki (Nagoya University)

ADVISORY COMMITTEE

Tetsuo Hatsuda (RIKEN iTHEMS)

Kenichi Bannai (Keio University, RIKEN AIP Center)

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN / Large Meeting Room, 2F Welfare and Conference Building (Cafeteria), RIKEN

Event Official Language: English

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