Seminar

Seminar

iTHEMS Biology Seminar

Liquid condensates in cell nucleus

April 15 at 10:00 - 11:00, 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)

I will give a talk in a journal club style. I will introduce recent papers regarding liquid-liquid phase separation in cells. In cell biology, several types of liquid condensates of proteins/RNAs h...more

Venue: via Zoom

Event Official Language: English

Seminar

Quantum Matter Seminar

What "Holography" is and how to use it

April 14 at 17:00 - 18:15, 2021

Dr. Mario Flory (Instituto de Fisica Teorica, Universidad Autonoma de Madrid, Spain)

In this talk, I will give an introduction to the holographic principle and the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence. I will also discuss the role that quantum entanglement pl...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Journal Club: Trace inequalities and their applications

April 14 at 14:30 - 15:30, 2021

Dr. Yukimi Goto (Special Postdoctoral Researcher, iTHEMS)

In this talk, I will explain trace inequalities and related topics. Mainly, I focus on results concerning quantum entropy. This talk is an elementary introduction to that subjects. *Detailed inform...more

Venue: via Zoom

Event Official Language: English

Seminar

Math-Phys Joint Seminar

Self-adjoint extension in quantum mechanics and non-Rydberg spectra of one-dimensional hydrogen atom

April 13 at 16:00 - 18:10, 2021

Prof. Takuju Zen (Professor, School of Environmental Science and Engineering, Kochi University of Technology)

We offer a beginner’s guide to the functional-analytical techniques in quantum mechanics, and cover its application to the 1D Coulomb problem. It is shown that the wave function at the diverging poin...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Simple models of cancer growth, MCMC parameter estimation and identifiability

April 8 at 10:00 - 11:00, 2021

Prof. Catherine Beauchemin (Deputy Program Director, iTHEMS / Professor, Department of Physics, Ryerson University, Canada)

I would like to introduce some basic concepts about (very simple) mathematical model of cancer growth, the basic math behind parameter estimation via Markov chain Monte Carlo (MCMC) based on Bayes' th...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Math Seminar

Long-time behavior of moving solids in a fluid and the kinetic theory of gases

April 7 at 16:00 - 18:10, 2021

Dr. Kai Koike (JSPS Fellow, Graduate School of Engineering, Kyoto University)

Understanding dynamics of solids in a fluid is a fundamental problem in fluid dynamics. Due to the growing interest in engineering in out-of-equilibrium situations, moving boundary problems for kineti...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Structural reduction of chemical reaction networks based on topology

April 1 at 10:00 - 11:00, 2021

Dr. Yuji Hirono (Assistant Professor, Asia Pacific Center for Theoretical Physics, Republic of Korea)

Chemical reactions form a complex network in living cells and they play vital roles for physiological functions. An amusing question is how the structure of a reaction network is linked to its chemica...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Evolutionary conservativeness and diversification of cycads: Understanding the evolution of living fossils

March 25 at 10:00 - 11:00, 2021

Dr. Jose Said Gutiérrez-Ortega (Assistant Professor, Institute for Excellence in Educational Innovation, Chiba University)

The cycads are a lineage of gymnosperms that represent an example of biological stasis success. Despite their early origin in the seed plant evolution, they survived multiple events of mass extinction...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Journal Club: Reinforcement Learning

March 24 at 13:00 - 14:00, 2021

Dr. Akinori Tanaka (Senior Research Scientist, iTHEMS)

Reinforcement Learning (RL) is a scheme of Machine Learning that is applicable "without training data." Instead, we prepare a "world" that agents (learners) can probe, and try to optimize their behavi...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Math Seminar

The Green-Tao theorem for number fields

March 22 at 16:00 - 18:10, 2021

Dr. Wataru Kai (Assistant professor, Mathematical Institute, Tohoku University)

5, 11, 17, 23, 29 are prime numbers which form an arithmetic progression of length 5. A famous theorem of Ben Green and Terence Tao in 2008 says there are arbitrarily long arithmetic progressions of p...more

Venue: via Zoom

Event Official Language: English

Seminar

Quantum Matter Seminar

Geometric nonlinear optical effects

March 16 at 17:00 - 18:15, 2021

Prof. Takahiro Morimoto (Associate Professor, Department of Applied Physics, The University of Tokyo)

Time: 5pm ~ 6:15pm (JST); 9am ~ 10:15am (CET) The responses of materials to high intensity light, i.e., nonlinear optical responses, constitute a vast field of physics and engineering. While geomet...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Microeconomics of metabolism

March 10 at 10:00 - 11:00, 2021

Mr. Jumpei Yamagishi (Kaneko Laboratory, University of Tokyo)

Metabolic behaviors of proliferating cells are often explained as a rational choice to optimize cellular growth rate. In contrast, microeconomics formulates consumption behaviors as optimization probl...more

Venue: via Zoom

Event Official Language: English

Seminar

Quantum Matter Seminar

Exceptional Topology of Non-Hermitian Systems: from Theoretical Foundations to Novel Quantum Sensors

March 3 at 17:00 - 18:15, 2021

Prof. Jan Budich (Professor, Quantum Many-Body Physics, TU Dresden, Germany)

CET: 9:00a.m. - 10:15a.m. on March 3, 2021 JST: 5:00p.m. - 6:15p.m. on March 3, 2021 EST: 3:00a.m. - 4:15a.m. on March 3, 2021 In a broad variety of physical scenarios ranging from classical meta...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

Origin of non-linearity of large deformation on DNA stretched

February 25 at 10:00 - 11:00, 2021

Dr. Hiroshi Yokota (Postdoctoral Researcher, iTHEMS)

Since DNA in a cell is mechanically stretched or rotated by many proteins, the mechanical response of DNA in vitro is expected to be basic point for understanding its behavior. When DNA is stretched b...more

Venue: via Zoom

Event Official Language: English

Seminar

ABBL-iTHEMS Joint Seminar

The Evolution of Primordial Neutrino Helicities under Gravitational and Magnetic Fields and Implications for their Detection

February 22 at 10:00 - 11:30, 2021

Prof. Gordon Baym (Senior Visiting Scientist, iTHEMS / Professor Emeritus, University of Illinois, USA)

Feb.22 (Mon) 10:00am-11:30am (JST) Primordial neutrinos decoupled in the early universe in helicity eigenstates. As I will discuss, two effects -- dependent on neutrinos having a non-zero mass -- ...more

Venue: via Online

Event Official Language: English

Seminar

iTHEMS Biology Seminar

High-throughput laboratory evolution with machine learning reveals constraints for drug resistance evolution

February 18 at 10:00 - 11:00, 2021

Mr. Junichiro Iwasawa (Doctoral course, Department of Physics, Graduate School of Science, The University of Tokyo)

The understanding of evolution is crucial to tackle the problem of antibiotic resistance which is a growing health concern. Although the lack of sufficient data has long hindered the mechanism of evol...more

Venue: via Zoom

Event Official Language: English

Seminar

Information Theory SG Seminar

Journal Club: Large deviation statistics of Markovian quantum systems

February 17 at 13:00 - 14:30, 2021

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

Large deviation is a mathematical framework to treat “rare events” in random processes [1]. In this journal club, I talk about recent development of large deviation analysis in open Markovian quantum ...more

Venue: via Zoom

Event Official Language: English

Seminar

DMWG Seminar

Mapping the Milky Way by VLBI Astrometry

February 16 at 13:30 - 15:00, 2021

Dr. Nobuyuki Sakai (Korea Astronomy and Space Science Institute (KASI))

Astrometry is the only way to obtain 6D (position-velocity) phase space information for astronomical objects. The unique capability allows us to examine the past, present, and future of the Milky Way....more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Theoretical Physics Seminar

Quantum mechanical description of energy dissipation and application to heavy-ion fusion reactions

February 16 at 13:00 - 14:30, 2021

Mr. Masaaki Tokieda (Graduate students, Department of Physics, Tohoku University)

For theoretical description of heavy-ion fusion reactions, two different models have been used depending on the incident energy. At energies above the Coulomb barrier, importance of energy dissipation...more

Venue: via Zoom

Event Official Language: English

Seminar

iTHEMS Biology Seminar

A machine learning approach for prediction of mitochondrial proteins in non-model organisms

February 12 at 10:00 - 11:00, 2021

Dr. Keitaro Kume (Assistant professor, Faculty of Medicine, University of Tsukuba)

The evolution of the repertoire of proteins localized to organelles is important for understanding the evolutionary process of organelles. However, experimental methods for identifying organelle-local...more

Venue: via Zoom

Event Official Language: English