Seminar

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. Taksu Cheon (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

Event Official Language: English

Seminar

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

Tomorrow

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 Study Group

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)

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 Study Group

Large deviation statistics of Markovian quantum systems

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

Dr. Ryusuke Hamazaki (Senior Research Scientist, iTHEMS)

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

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 Study Group

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 Study Group

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 Study Group

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 Study Group

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