Thursday, March 10, 8:00– 9:30 External Event: Fundamentals Fest, mini Pre-event on Science "Exploring and Bridging: The Potential of Basic Science"
Thursday, March 10, 10:00– 11:00 iTHEMS Biology Seminar
Thursday, March 10, 13:30– 15:00 NEW WG Seminar
Friday, March 11, 12:30- 13:30 Coffee Meeting
Friday, March 11, 16:00- 18:00 iTHEMS Math Seminar
Saturday, March 12, 13:00- 14:30 Special Lecture: 【Shigefumi Mori and Takashi Sakajo Special Talk】How is mathematics utilized in society? - Exploring the Essence of Mathematical Research

Dr. Ashley Nord (Centre de Biologie Structurale/CNRS, France) and Dr. Rubén Pérez-Carrasco (Imperial College London, UK) gave a very interesting talk on the dynamics of stator units, the ion channels that generate torque for bacterial flagella.

In the first half of the presentation, Dr. Ashley explained how the stator units produce torque once they are bound to the flagellar structure. Their experiment was able a) to track magnetic nanoparticles attached to E. coli flagella, and b) to set two initial conditions for the number of bound stator units. The work differs from the traditional views of the field because it shows -- for the first time -- the existence of two sets of relaxation times for stator units [1,2].

In the second part of the talk, Dr. Rúben discussed various stochastic models with asymmetric relaxation times to describe the dynamics of stator units. According to estimates via approximate Bayesian computation, the extended catch bond model with additional bound states performed better than other alternatives. If confirmed, their conclusion could give important hints and improve our understanding of biochemical processes in flagellar motors.

Reported by Gilberto Nakamura

The Quantum Matter Study Group invited Dr. Hong-Yan Shih from Academia Sinica to talk about the phase transitions of turbulence dynamics. In the beginning, she introduced the turbulence and the phase transition between laminar flow and turbulence. Surprisingly, this phase transition shares a unified picture with the predator-prey system. Then, she showed the connection between this fluid dynamics and the biosystem with the same university class. It is an inspiring interdisciplinary study.

Reported by Ching-Kai Chiu

My name is Masato Itami, and I have joined iTHEMS as a visiting scientist in March 2022. I love stochastic things by nature, so I am currently studying the universal form of stochastic equations of motion for fluctuating objects in non-equilibrium systems. I am looking forward to interacting with people from various fields. By the way, my hobby is chess, so if you like chess, let's play chess together while/without talking about science.

Title: Advances in QED with intense background fields
Author: A. Fedotov, A. Ilderton, F. Karbstein, B. King, D. Seipt, H. Taya, G. Torgrimsson
arXiv: http://arxiv.org/abs/2203.00019v1

Title: Nuclear force with LapH smearing
Author: Takuya Sugiura, Yutaro Akahoshi, Tatsumi Aoyama, Takahiro M. Doi, Takumi Doi
arXiv: http://arxiv.org/abs/2202.12532v1

Title: Weighted one-level density of low-lying zeros of Dirichlet $L$-functions
Author: Shingo Sugiyama, Ade Irma Suriajaya
arXiv: http://arxiv.org/abs/2201.00326v1

Title: Zeros of derivatives of $L$-functions in the Selberg class on $\Re(s)<1/2$
Author: Sneha Chaubey, Suraj Singh Khurana, Ade Irma Suriajaya
arXiv: http://arxiv.org/abs/2202.12126v1

Title: Entropies in $μ$-framework of canonical metrics and K-stability, II -- Non-archimedean aspect: non-archimedean $μ$-entropy and $μ$K-semistability
Author: Eiji Inoue
arXiv: http://arxiv.org/abs/2202.12168v1

Title: Revealing time-resolved particle acceleration in the recurrent Nova RS Ophiuchi
Author: H.E.S.S. Collaboration (Naomi Tsuji)
arXiv: http://arxiv.org/abs/2202.08201v1