Seminar

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

Seminar

iTHEMS Biology Seminar

System identification of mechano-chemical epithelial sheet dynamics

February 4 at 10:00 - 11:00, 2021

Mr. Yoshifumi Asakura (3rd year doctoral program, Graduate School of BIOSTUDIES, Kyoto University)

Collective migration of epithelial cells is a fundamental process of multi-cellular organisms. Our recent study using live imaging with FRET-based biosensor discovered that cell migration within an ep...more

Venue: via Zoom

Event Official Language: English

Seminar

Quantum Matter Seminar

Mathematics of magic angles for bilayer graphene

February 3 at 20:00 - 21:15, 2021

Mr. Simon Becker (PhD Student, Department of Applied Mathematics and Theoretical Physics, University of Cambridge)

20:00pm ~ 21:15pm on Feb. 03th, 2021 (JST) 11:00am ~ 12:15am on Feb. 03th, 2021 (UK) Magic angles are a hot topic in condensed matter physics: when two sheets of graphene are twisted by those angl...more

Venue: via Zoom

Event Official Language: English

Seminar

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 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

Information Theory SG Seminar

Journal Club: 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

iTHEMS Biology Seminar

Introduction to Boolean modeling and Boolean networks as information processing units

January 21 at 10:00 - 11:00, 2021

Dr. Takashi Okada (Senior Research Scientist, iTHEMS)

Boolean networks are widely used in physics, biology, social science, and computer science. In this talk, I will introduce the basics of Boolean networks and give an overview of Biological application...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Information theory in ecology: Markov chain, Venn diagram, Kronecker (and Cartesian graph) products, and Tsallis entropy

January 20 at 13:00 - 14:00, 2021

Dr. Ryosuke Iritani (Research Scientist, iTHEMS)

This is more like an introductory talk on how I was motivated to work with information theory, and include unpublished data. Ecologists have been long interested in understanding diversity (diverge...more

Venue: via Zoom

Event Official Language: English

Seminar

Quantum Matter Seminar

Time-dependent driven quantum critical systems in (1+1) dimension

January 18 at 10:00 - 11:15, 2021

Dr. Xueda Wen (Postdocs, Physics Department, Harvard University, USA)

10:00am ~ 11:15am on Jan. 18th, 2021 (JST) 8:00pm ~ 9:15pm on Jan. 17th, 2021 (EST) I will introduce an analytically solvable setup for time-dependent driven quantum critical systems in (1+1)D, wh...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

What are genes and how can we find them?

January 14 at 10:00 - 11:00, 2021

Dr. Jeffrey Fawcett (Senior Research Scientist, iTHEMS)

Although 'gene' is a word that is used frequently in the society, most people probably do not know what genes actually are. In fact, its definition is not so straightforward. In this talk, I will firs...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Accelerated equilibration in classical stochastic systems

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

Dr. Kyosuke Adachi (Special Postdoctoral Researcher, iTHEMS / Special Postdoctoral Researcher, Nonequilibrium Physics of Living Matter RIKEN Hakubi Research Team, RIKEN Center for Biosystems Dynamics Research)

Shortcuts to adiabaticity (STA) [1] are processes that make a given quantum state evolve into a target state in a fast manner, which can be useful to avoid decoherence in quantum experiments. In this ...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

From local resynchronization to global pattern recovery in the zebrafish segmentation clock

January 7 at 10:00 - 11:00, 2021

Dr. Koichiro Uriu (Assistant Professor, College of Science and Engineering, Kanazawa University)

Tissue-scale developmental patterns are often generated by local cellular interactions and global tissue deformation. An example is gene expression rhythms in vertebrate, termed the segmentation clock...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Review on the Lieb-Robinson bound

December 23 at 13:00 - 14:00, 2020

Dr. Yukimi Goto (Special Postdoctoral Researcher, iTHEMS)

The Lieb-Robinson bound is inequality on the group velocity of information propagation for quantum many-body systems. In this talk, I review this bound mathematically and explain some consequences of ...more

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Mathematical model-based quantitative data analysis for COVID-19

December 22 at 10:00 - 11:00, 2020

Dr. Shingo Iwami (Associate Professor, Department of Biology, Kyushu University)

The recent spread of corona threatens the health of people around the world. We urgently need strategies to reduce COVID-19 spread and to enhance antiviral drug development for individual patients. Ma...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Theoretical Physics Seminar

Classical liquids and functional renormalization group

December 17 at 13:00 - 14:30, 2020

Dr. Takeru Yokota (Postdoctoral Researcher, Institute for Solid State Physics, The University of Tokyo)

Development of methods for classical statistical mechanics is desired for accurate predictions of the structures and thermodynamic properties of liquids. A powerful framework to describe classical liq...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Autoimmune diseases initiated by pathogen infection: mathematical modeling

December 17 at 10:00 - 11:00, 2020

Ms. Akane Hara (Doctoral Course, Graduate School of Systems Life Sciences, Kyushu University)

The pathogen with proteins similar to host’s proteins is likely to cause autoimmunity, which is called “molecular mimicry”. To understand the mechanism of autoimmunity development caused by pathogen i...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Quantum Wasserstein distance of order 1

December 16 at 13:00 - 14:30, 2020

Dr. Ryusuke Hamazaki (Senior Research Scientist, iTHEMS / RIKEN Hakubi Team Leader, Nonequilibrium Quantum Statistical Mechanics RIKEN Hakubi Research Team, RIKEN Cluster for Pioneering Research)

The Wasserstein distance is an indicator for the closeness of two probability distributions and is applied to various fields ranging from information theory to neural networks [1]. It is particularly ...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Statistical model for meaning representation of language

December 16 at 10:30 - 12:00, 2020

Dr. Koichiro Yoshino (Team Leader, Robotics Project, RIKEN Cluster for Science, Technology and Innovation Hub, RIKEN)

One of the final goals of natural language processing is building a model to capture the semantic meaning of language elements. Language modeling is a recent research trend to build a statistical mode...more

Venue: via Zoom

Event Official Language: English

Seminar

Math-Phys Joint Seminar

Non-perturbative tests of duality cascades in three dimensional supersymmetric gauge theories

December 14 at 16:00 - 18:10, 2020

Dr. Naotaka Kubo (Postdoctoral Researcher, Yukawa Institute for Theoretical Physics, Kyoto University)

M2-brane is an interesting object in M-theory and string theory. A three-dimensional 𝒩=6 super conformal Chern Simons theory with gauge group U(𝑁1)×𝑈(𝑁2), called ABJ theory, describes the low energy b...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Theoretical Physics Seminar

Conserved charges in gravity and entropy

December 10 at 13:00 - 14:30, 2020

Dr. Shinya Aoki (Professor, Yukawa Institute for Theoretical Physics, Kyoto University)

We propose a manifestly covariant definition of a conserved charge in gravity. We first define a charge density from the energy momentum tensor with a Killing vector, if exists in the system, and calc...more

Venue: via Zoom

Event Official Language: English