Seminar

Seminar

Biology Seminar

Quantification model of energy of loop structure on biopolymer

June 3 at 10:00 - 10:45, 2020

Dr. Hiroshi Yokota (Postdoctoral Researcher, iTHEMS)

During cell division, the chromatin fiber condenses into a rod-like shape, which is the so-called chromosome. The chromosome is constructed by consecutive chromatin loop structures whose excluded volu...more

Venue: via Zoom

Event Official Language: English

Seminar

QFT-core Seminar

Localization and universality in non-Hermitian many-body systems

May 29 at 15:00 - 16:30, 2020

Dr. Ryusuke Hamazaki (Senior Research Scientist, iTHEMS)

Recent study on isolated quantum many-body systems have revealed two different phases distinguished by their dynamics and spectral statistics. One is an ergodic phase whose spectral statistics exhibit...more

Venue: via Zoom

Event Official Language: English

Seminar

Math Seminar

Knotted 2-spheres in the 4-space and Yang-Mills gauge theory

May 27 at 16:00 - 18:10, 2020

Dr. Masaki Taniguchi (Special Postdoctoral Researcher, iTHEMS)

The classification problem of knots is one of the central topics in a study of topology. In the first part, we review classical knot theory and theory of 2-dimensional knots in the 4-dimensional space...more

Venue: via Zoom

Event Official Language: English

Seminar

Biology Seminar

Forgetting in Reinforcement Learning Links Sustained Dopamine Signals to Motivation

May 27 at 10:00 - 10:45, 2020

Ms. Ayaka Kato (RIKEN-CBS / Ph.D. student, The University of Tokyo)

Dopamine (DA) has been suggested to have two reward-related roles: (1) representing reward-prediction-error (RPE), and (2) providing motivational drive. Role(1) is based on the physiological results t...more

Venue: via Zoom

Event Official Language: English

Seminar

QFT-core Seminar

Gradient Flow and Its Applications

May 15 at 13:30 - 15:00, 2020

Dr. Kengo Kikuchi (Special Postdoctoral Researcher, iTHEMS)

Gradient flow is the one of the methods to suppress the ultraviolet divergence in gauge theories. The any correlation functions in terms of the flowed field, which is defined by the gradient flow equa...more

Venue: via Zoom

Event Official Language: English

Seminar

Math Seminar

How many electrons can atoms bind?

May 13 at 16:00 - 18:10, 2020

Dr. Yukimi Goto (Special Postdoctoral Researcher, iTHEMS)

In this talk, I will introduce the mathematical studies on the ionization problem. Some experimental & numerical evidences say that any doubly charged atomic ion X^{2-} is not stable. This 'fact' is c...more

Venue: via Zoom

Event Official Language: English

Seminar

Biology Seminar

Models to describe how virus spreads in vitro

May 13 at 10:00 - 10:45, 2020

Dr. Catherine Beauchemin (Senior Visiting Scientist, iTHEMS)

This is meant as an introductory talk about my research field, virophysics, in which I apply the rigour and methods of physics to study virology. My focus is primarily in vitro (how virus spreads cell...more

Venue: via Zoom

Event Official Language: English

Seminar

Biology Seminar

Slip or (k)not: Geometry and mechanical performance of physical knots

May 7 at 17:00 - 17:45, 2020

Dr. Tomohiko Sano (PD, École polytechnique fédérale de Lausanne, Switzerland)

Knots can impart unique mechanical function to filamentary structures, with examples ranging across length scales, including DNA, polymer-chains, shoelaces, climbing ropes, tennis racket, and surgical...more

Venue: via Zoom

Event Official Language: English

Seminar

Math Seminar

From Eigenvalues to Resonances

May 1 at 16:00 - 18:10, 2020

Dr. Keita Mikami (Research Scientist, iTHEMS)

Resonance is one of the most studied object in mathematical study of Schrödinger operators. One possible reason is that resonance is appeared in many other fields like arithmetic, physics, and topogra...more

Venue: via zoom

Event Official Language: English

Seminar

Biology Seminar

Analyses of large-scale sequence data from “PROTIST” can reveal the eukaryotic phylogeny and evolution

April 30 at 10:00 - 10:45, 2020

Dr. Yuki Yazaki (Postdoctoral Researcher, iTHEMS)

Most of the phylogenetic diversity of eukaryotes is made up of unicellular eukaryotic microorganisms called protists, some of which have not known phylogenetic home (called Orphans). Orphans are likel...more

Venue: via zoom

Event Official Language: English

Seminar

DMWG seminar

Characterizing the continuous gravitational-wave signal from boson clouds around Galactic isolated black holes

April 27 at 16:00 - 17:00, 2020

Dr. Sylvia Zhu (Postdoctoral Researcher, Deutsches Elektronen-Synchrotron DESY, Germany)

Bosons such as axions or axion-like particles can form enormous clouds around black holes via the superradiance instability. As the bosons annihilate in the presence of the black hole, they produce a ...more

Venue: via Zoom

Event Official Language: English

Seminar

Biology Seminar

Social evolution in viruses

April 22 at 10:00 - 10:45, 2020

Mr. Asher Leeks (International Program Associate, iTHEMS)

Viruses are normally thought of as solitary organisms. However, in reality viruses often interact with one another, and these interactions can have important consequences for how viruses evolve and ca...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Starter Meeting 2020

April 10 at 12:30 - 13:30, 2020

iTHEMS Starter Meeting 2020 will be held from 12:30 with Zoom streaming.

Event Official Language: English

Seminar

Holography from field theories: a realization of AdS/CFT correspondence and beyond

March 18 at 13:30 - 14:30, 2020

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

*Seminar room changed from 160 to 433. We argue that the Anti-de-Sitter (AdS) geometry in $d+1$ dimensions naturally emerges from an arbitrary conformal field theory in $d$ dimensions using the fre...more

Venue: #433, Main Research Building

Event Official Language: Japanese

Seminar

Math Seminar

Index of the Wilson-Dirac operator revisited: a discrete version of Dirac operator on a finite lattice

February 25 at 16:00 - 18:10, 2020

Dr. Mikio Furuta (Professor, The University of Tokyo)

Venue: Seminar Room #160

Event Official Language: English

Seminar

DMWG seminar

Mining for Dark Matter substructure: Learning from lenses without a likelihood

February 17 at 14:00 - 15:30, 2020

Dr. Johann Brehmer (Postdoctoral Researcher, New York University)

Dr. Brehmer gives us a talk about a method to deduce DM small structures. Please join us!

Venue: #424-426, Main Research Building

Event Official Language: English

Seminar

Math Seminar

Solved and open problems regarding the neighborhood grid data structure

February 7 at 16:00 - 18:10, 2020

Dr. Martin Skrodzki (Visiting Researcher, iTHEMS)

February 7 at 16:00-17:00 17:10-18:10, 2020

Venue: Seminar Room #160

Event Official Language: English

Seminar

Biology Talk

February 5 at 16:00 - 16:30, 2020

Dr. Yasuo Yasui (Assistant Professor, Laboratory of Crop Evolution, Kyoto University)

Dr. Yasuo Yasui will give a 20-30 min introduction of the buckwheat project. Please feel free to join !

Venue: #160, 1F, Main Research Building

Event Official Language: Japanese

Seminar

ABBL-iTHEMS Joint Seminar

ABBL/iTHEMS seminar - talk on ultra-high energy cosmic rays

January 31 at 14:00 - 15:00, 2020

Dr. Eiji Kido (Astrophysical Big Bang Laboratory, RIKEN)

Venue: Seminar Room #132

Event Official Language: English

Seminar

Nucleon Structure from Quantum Chromodynamics

January 30 at 11:00 - 12:00, 2020

Dr. Chia Cheng Chang (Research Scientist, iTHEMS)

Talk of this seminar is a colloquium style, so that non-expert can enjoy. Please feel free to join.

Venue: #433, Main Research Building

Event Official Language: English