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
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
Tomorrow
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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