iTHEMS Colloquium

Colloquium

iTHEMS Colloquium

Finding Gravitational Waves from the Early Universe

September 27 at 16:00 - 17:30, 2021

Dr. Eiichiro Komatsu (Director, Max Planck Institute for Astrophysics, Germany)

The Cosmic Microwave Background (CMB) gives a photographic image of the Universe when it was still an “infant”. We have been using it to test our ideas about the origin of the Universe. The CMB research told us a remarkable story: the structure we see in our Universe such as galaxies, stars, planets, and eventually ourselves originated from tiny quantum fluctuations in the period of the early Universe called cosmic inflation. While we have accumulated strong evidence for this picture, the extraordinary claim requires extraordinary evidence. The last prediction of inflation that is yet to be confirmed is the existence of primordial gravitational waves whose wavelength can be as big as billions of light years. To this end we have proposed to JAXA a new satellite mission called LiteBIRD, whose primary scientific goal is to find signatures of gravitational waves in the polarisation of the CMB. In this presentation we describe physics of gravitational waves from inflation, and the LiteBIRD proposal.

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

Quantitative Population Dynamics in Interdisciplinary Biology

July 8 at 10:30 - 12:00, 2021

Prof. Shingo Iwami (Professor, Division of Biological Science, Graduate School of Science, Nagoya University)

Through the course of life, from the moment of birth till death, an organism will achieve various states of equilibrium or ‘homeostasis’ which will inevitably encounter perturbations. The processes of cell growth, differentiation, infection, mutation, evolution and adaptation work together as a coordinated ‘system’, described by mathematical models for population dynamics, to maintain a healthy state. Any disruptions to this system leads to disease including infection, allergy, cancer, and aging. We are conducting interdisciplinary research to elucidate “Quantitative Population Dynamics” through the course of life with original mathematical theory and computational simulation, which are both our CORE approach. Our mathematical model-based approach has quantitatively improved a current gold-standard approach essentially relying on the statistical analysis of “snapshot data” during dynamic interaction processes in life sciences research. In this talk, I will explain how our interdisciplinary approach extends our understanding for complicated clinical data and apply real world problem with an example of the Novel Coronavirus Disease, COVID-19.

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

Mirror symmetry and KAM theory

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

Prof. Kenji Fukaya (Permanent Member, Simons Center for Geometry and Physics, Stony Brook University, New York, USA)

13:30pm-15:00pm (JST) Mirror symmetry is a phenomenon discovered in String theory and is much discussed recently in mathematics especially in the field of complex (algebraic) geometry and symplectic geometry. Strominger-Yau-Zaslow found that this phenomenon is closed related to a Lagrangian torus fibration. In an integrable system in Hamiltonian dynamics, the phase space is foliated by Lagrangian tori. I would like to explain a program that the Lagrangian torus fibration found by Strominger-Yau-Zaslow could be regarded as one appearing certain integrable system and KAM theory (which describes a amiltonian dynamics that is a perturbation of an integrable system) could appear in the situation of Mirror symmetry.

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

Geometry (形); Inconspicuous regulator that determines the fate of cells

December 14 at 10:00 - 11:30, 2020

Prof. Sungrim Seirin-Lee (Professor, Hiroshima University)

December 14 at 10:00-11:30, 2020 (JST) December 13 at 20:00-21:30, 2020 (EST) In the history of mathematical study in pattern formation, the effect of domain has been considered as an important factor that can regulate spatial patterning. However, it is still unknown in biology how the geometry of the domain such as nuclear or cellular shapes can directly regulate the cell fate. In this talk, I will introduce two studies of spatial reorganization in chromatin and cellular dynamics and show that the domain is likely to play a critical role in determining the cell function.

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium Supported by RIKEN SUURI CORPORATION

The Unreasonable Effectiveness of Quantum Theory in Mathematics

November 26 at 10:00 - 11:30, 2020

Prof. Robbert Dijkgraaf (Director, Institute for Advanced Study in Princeton, USA)

November 26 at 10:00-11:30, 2020 (JST) November 25 at 20:00-21:30, 2020 (EST) The physical concepts of quantum theory, in particular of quantum gravity and string theory, have proven to be extremely powerful in addressing deep problems in pure mathematics, from knot invariants to algebraic geometry. Is there such a thing as “quantum mathematics”? Should we add Feynman diagrams, strings, branes and black holes to the language of mathematics?

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

iTHEMS Intensive Course [4] : "Adaptive strategies of organisms, their mathematical bases" - Cancer as a mini-evolutionary process

June 25 at 15:00 - 16:30, 2020

Prof. Yoh Iwasa (Senior Advisor, iTHEMS / Professor, Kwansei Gakuin University)

Living systems exhibit features distinct from nonliving physical systems: their structure and behaviors appear to be chosen adaptive. They are the outcomes of evolution. Mathematical formalisms developed in engineering and social sciences (e.g. control theory, game theory, evolutionary game theory) are sometimes very useful in biology.

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

Emergence of life in an inflationary universe

May 11 at 15:30 - 17:00, 2020

Dr. Tomonori Totani (Professor, Department of Astronomy, The University of Tokyo)

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

Interaction Models in Quantum Optics, Representation Theory and Number Theory

April 10 at 15:30 - 17:00, 2020

Dr. Masato Wakayama (Senior Advisor, iTHEMS / Vice President, Tokyo University of Science)

Venue: via Zoom

Event Official Language: English

Colloquium

iTHEMS Colloquium

Exploring the learning principle in the brain

January 16 at 15:30 - 17:00, 2020

Dr. Taro Toyoizumi (Team Leader, Center for Brain Science, RIKEN)

Venue: Large Meeting Room, 2F Welfare and Conference Building (Cafeteria)

Broadcast: R311, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

Colloquium

iTHEMS Colloquium

Topological phases of matter and operator algebras

October 4 at 15:30 - 17:00, 2019

Prof. Yasuyuki Kawahigashi (Senior Visiting Scientist, iTHEMS / Professor, Graduate School of Mathematical Sciences, The University of Tokyo)

Venue: Okochi Hall

Broadcast: R511, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

Colloquium

iTHEMS Colloquium

Spacetime Geometry of Black Holes, Wormholes, and Time Machines

July 2 at 15:30 - 17:00, 2019

Prof. Pei-Ming Ho (Department of Physics, National Taiwan University)

Venue: Large Meeting Room, 2F Welfare and Conference Building (Cafeteria)

Broadcast: R511, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

Colloquium

iTHEMS Colloquium

Quantum computing: current status and prospects

April 25 at 15:00 - 16:30, 2019

Dr. Keisuke Fujii (Kyoto University)

Venue: Suzuki Umetaro Hall

Broadcast: R511, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

Colloquium

iTHEMS Colloquium

ZetaValue2019-iTHEMS Special Mathematics Colloquium

March 21 at 14:00 - 17:30, 2019

Prof. Kohji Matsumoto (Nagoya University)
Prof. Jörn Steuding (University of Würzburg, Germany)

Venue: Okochi Hall

Event Official Language: English

Colloquium

iTHEMS Colloquium

Tropical Rain Forest

February 21 at 15:30 - 17:00, 2019

Prof. Akiko Satake (Professor, Mathematical Biology Laboratory, Department of Biology, Faculty of Science, Kyushu University)

Venue: Okochi Hall

Broadcast: #311, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

Colloquium

iTHEMS Colloquium

Economic Networks: a Physicist's View

October 3 at 15:00 - 16:30, 2018

Prof. Hideaki Aoyama (Senior Visiting Scientist, iTHEMS / Professor, Graduate School of Science, Kyoto University)

Economic phenomena occur on networks formed by agents, such as firms and financial institutions. In order to understand the dynamic nature of economy, we need to understand structures of those networks and interactions between economic agents on it. In this talk, I will review several important research results on this theme, most of which uses Japanese rich, actual (not simulated) network data, including trade (production) network of about one million firms. Community structures, simulation of effect of natural disasters, new methodology required for such inquiry are some of the topics to be covered.

Venue: Large Meeting Room, 2F Welfare and Conference Building (Cafeteria)

Broadcast: R511, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English

Colloquium

iTHEMS Colloquium

Bell's Theorem, Entanglement, Quantum Teleportation and All That

July 19 at 16:00 - 17:30, 2018

Prof. Anthony James Leggett (Professor, University of Illinois at Urbana-Champaign, USA)

iTHEMS-CEMS Joint Colloquium. Professor Leggett is widely recognized as a world leader in the theory of low-temperature physics, and his pioneering work on superfluidity was recognized by the 2003 Nobel Prize in Physics.

Venue: Okochi Hall

Broadcast: #311, Computational Science Research Building / SUURI-COOL (Kyoto) / 2F Seminar Room, AIMR Main Building

Event Official Language: English

Colloquium

iTHEMS Colloquium

Systems Biology of Cellular Rhythms

July 2 at 15:00 - 16:30, 2018

Prof. Albert Goldbeter (Professor, Unit of Theoretical Chronobiology, Faculty of Sciences, Université Libre de Bruxelles, Belgium)

Venue: Suzuki Umetaro Hall

Broadcast: #305-2, Computational Science Research Building / SUURI-COOL (Kyoto) / 2F Seminar Room, AIMR Main Building

Event Official Language: English

Colloquium

iTHEMS Colloquium

On the interplay between intrinsic and extrinsic instabilities of spatially localized patterns

June 7 at 15:00 - 16:30, 2018

Prof. Yasumasa Nishiura (Professor, Advanced Institute for Materials Research, Tohoku University)

Venue: Nishina Hall

Broadcast: #305-2, Computational Science Research Building / SUURI-COOL (Kyoto)

Event Official Language: English

Colloquium

iTHEMS Colloquium

The Description of Biological Phenomena as Open System / Every Biological Variable has a Different Dynamic Range

April 23 at 15:00 - 16:30, 2018

Dr. Kazuhiro Sakurada (Deputy Program Director, Medical Sciences Innovation Hub Program, RIKEN Cluster for Science, Technology and Innovation Hub)
Dr. Jun Seita (Unit Leader, AI based Healthcare and Medical Data Analysis Standardization Unit, RIKEN Cluster for Science, Technology and Innovation Hub)

The Description of Biological Phenomena as Open System / Dr. Sakurada Every Biological Variable has a Different Dynamic Range / Dr. Seita

Venue: Okochi Hall

Broadcast: 6F auditorium, Computational Science Research Building / SUURI-COOL (Kyoto) / SUURI-COOL (Sendai)

Event Official Language: English