Compact-star phenomena and equation of state

December 28 (Thu) at 10:30 - 11:30, 2017

Shun Furusawa (Special Postdoctoral Researcher, iTHEMS)

Venue: SUURI-COOL (Kyoto)

Event Official Language: English

Theoretical study on the universality in biological clock and its species-specificity

December 27 (Wed) at 16:00 - 17:00, 2017

Gen Kurosawa (Research Scientist, iTHEMS / Research Scientist, Theoretical Biology Laboratory, RIKEN)

Venue: SUURI-COOL (Kyoto)

Event Official Language: English

Mathematical Modeling of Retinal Cellular Mosaic Pattern Formation

December 27 (Wed) at 13:30 - 14:30, 2017

Noriaki Ogawa (Postdoctoral Researcher, Interdisciplinary Theoretical Science Research Group (iTHES), RIKEN)

Venue: SUURI-COOL (Kyoto)

Event Official Language: English

Topology of linear operators and topological insulators

December 27 (Wed) at 10:30 - 11:30, 2017

Yosuke Kubota (Research Scientist, iTHEMS)

Venue: SUURI-COOL (Kyoto)

Event Official Language: English

Chiral Phases in Frustrated 2D Antiferromagnets and Fractional Chern Insulators

December 21 (Thu) at 11:00 - 12:00, 2017

Eduardo Fradkin (University of Illinois, USA)

Venue: #535-537, 5F, Main Research Building

Event Official Language: English

Baryon Asymmetry of the Universe generated by Helical Hypermagnetic fields through chiral anomaly

December 20 (Wed) at 11:00 - 12:00, 2017

Kohei Kamada (Center for Theoretical Physics of the Universe, Institute for Basic Science, Republic of Korea)

Recent observations of TeV blazars by Fermi identified deficits of secondary GeV cascade photons.These observations can be explained by intergalactic magnetic fields, which may have a primordial origin.If the magnetic fields are helical and generated before the electroweak symmetry breaking,nontrivial interaction between (hyper)magnetic fields and other particles can cause some interestingand non negligible phenomena in the early Universe. In this talk, I will show that the baryon asymmetry can be generated by the chiral anomaly and this mechanism might be responsible for the present baryon asymmetry of the Universe. The intergalactic magnetic fields are its smoking-gun. If this mechanism is responsible for the present Universe,the BSM physics is needed for the generation of (hyper)magnetic fields but not for the baryogenesis.

Venue: Seminar Room #160

Event Official Language: English

Approaches to inflationary cosmology

December 19 (Tue) at 15:00 - 16:30, 2017

Jun'ichi Yokoyama (The University of Tokyo)

The 24th iTHES Theoretical Science Colloquium

Venue: Okochi Hall

Event Official Language: English

Frontiers of nonequilibrium physics - Particle physics, cosmology, and condensed matter -

December 6 (Wed) - 8 (Fri), 2017

RIKEN Symposium・iTHES/iTHEMS Workshop

Venue: Suzuki Umetaro Hall

Event Official Language: Japanese

Development and Evolution

December 1 (Fri) at 15:00 - 17:30, 2017

Shigeru Kuratani (Chief Scientist, Evolutionary Morphology Laboratory, RIKEN Cluster for Pioneering Research (CPR))

Venue: Suzuki Umetaro Hall

Event Official Language: Japanese

A New Look at Matrix Models for QCD3

November 24 (Fri) at 16:30 - 18:00, 2017

Takuya Kanazawa

Non-chiral random matrix models for QCD in 2+1 dimensions and their new generalizations will be discussed.

Venue: Seminar Room #160

Event Official Language: English

Recent Developments in QCD and Quantum Field Theories

November 9 (Thu) - 12 (Sun), 2017

This workshop covers a broad range of recent developments in QCD and quantum field theories involving perturbative QCD (with applications in the nucleon structure and heavy ion collisions), AdS/CFT correspondence and non-perturbative physics, lattice QCD, nucleon and nuclear structures and reactions, quantum field theory at finite temperature/density, the theory of cold atoms, and anomalous effects such as chiral magnetic/vortical effects rooted in quantum anomalies and topology. The primary goal of the workshop is to gather researchers in the relevant fields to exchange ideas and establish future collaborations. RIKEN - Taiwan Workshop

Event Official Language: English

Theories of Astrophysical Big Bangs

November 6 (Mon) - 17 (Fri), 2017

We are pleased to announce an international workshop on Astrophysical Big Bangs, which will cover supernovae, supernova remnants, gamma-ray bursts, black holes, neutron stars, and high-energy astrophysics in general. We are inviting numerous VIPs (very important collaborators and best friends) from around the world to give talks, and both current and past ABBL members are welcome to present their work. The workshop will be held from November 6th to 10th, but we will also have one more week for free discussion (November 13th-17th). During this second week, we plan to have casual discussion sessions in the morning and completely free afternoons; we would like to talk with our VIPs and ABBL alumni about ongoing and/or future collaborations.

Venue: Okochi Hall

Event Official Language: English

Knot Theory (8th)

November 2 (Thu) at 10:30 - 11:30, 2017

Yuka Kotorii (Postdoctoral Researcher, Mathematical Analysis Team, RIKEN Center for Advanced Intelligence Project (AIP))

Event Official Language: English

The Dawn of the Gravitational Wave Astronomy and the Discovery of the Neutron Star Merger

October 31 (Tue) at 15:30 - 17:00, 2017

Shigehiro Nagataki (Deputy Program Director, iTHEMS / Chief Scientist, Astrophysical Big Bang Laboratory, RIKEN)
Susumu Inoue (Research Scientist, Astrophysical Big Bang Laboratory, RIKEN)
Toru Tamagawa (Chief Scientist, High Energy Astrophysics Laboratory, RIKEN)

Venue: Okochi Hall

Event Official Language: Japanese

Knot Theory (7th)

October 31 (Tue) at 10:30 - 11:30, 2017

Yuka Kotorii (Postdoctoral Researcher, Mathematical Analysis Team, RIKEN Center for Advanced Intelligence Project (AIP))

Venue: Seminar Room #160

Event Official Language: English

Simulations and machine learning going hand in hand for clinical medicine

October 30 (Mon) at 15:00 - 16:30, 2017

Hiroshi Suito (Professor, Advanced Institute for Materials Research (AIMR), Tohoku University)

The 23rd iTHES Theoretical Science Colloquium Recent rapid progress of AI technologies has strongly affected the medical community, profoundly enhancing medical image analysis as well as improving decision-making in clinical practice. Nevertheless, black-box systems cannot be accepted easily in clinical medicine because of issues related to accountability and incorporation of new and rapidly developing medical technologies. This talk presents a bilateral approach to cardiovascular problems consisting of (1) machine learning approach for estimation of fluid dynamical forces such as wall shear stress and oscillatory shear index by using geometrical information of the vessels; and (2) simulation approach for understanding physical mechanisms, from vessel geometry to wall forces distributions via flow patterns, using fluid–structure interaction analysis based on partial differential equations. This work was conducted as part of our JST-CREST project: "New challenges for mathematical modeling in clinical medicine."

Venue: 2F Large Meeting Room, RIBF Building, RIKEN Wako Campus

Broadcast:R511, Computational Science Research Building

Event Official Language: English

iTHEMS Mini-workshop/ Theoretical Biology Mini-workshop

October 19 (Thu) at 14:00 - 17:00, 2017

“Kazusa DNA Research Institute: Who is this?” Dr. Satoshi Tabata (Kazusa DNA Res Inst, Director) “Did the journey to strawberry start from Japan?” Dr. Sachiko Isobe (Kazusa DNA Res Inst, Lab Head) Strawberry (Fragaria × ananassa) is cultivated and consumed across the world. It is an allo-polyploidy species (2n = 8X = 56) with an estimated genome size of 1C = 708–720 Mb. Strawberry was artificially generated in the 16th century Europe, by crossing between two octoploid species, F. chiloensis and F. virginiana. The evolutionary origin and genome structure have been discussed and not fully determined. The first proposed structure was AABBBBCC model (Federova, 1946), then, Senanayake and Bringhurst (1967) proposed AAA’A’BBBB model. The fully allopolyploidy structure (AAA’A’BBB’B’) was suggested by Bringhurst in 1990 based on isozyme segregation. This model was also supported by the segregation patterns of CAPS markers (Kunihisa et al. 2011) and SSR markers (Isobe et al. 2013). However, just recently, Tennessen et al. (2014) proposed the AvAvBiBiB1B1B2B2, model, according to the results of targeted DNA capture and sequencing by using next generation sequencing (NGS) technology. In this model, Av represents the most F. vesca like genome, while Bi represents the most F, iinmae like genome. The origin of F. vesca is considered as North America, and F. iinumae is an endemic species in Japan. Our resent results of denovo whole genome sequencing support the AvAvBiBiB1B1B2B2 model, that suggest considerable part of the strawberry genome showed the highest similarity with F. iinumae.

Event Official Language: English

Development of AI Smart Robots and the business model

October 5 (Thu) at 16:00 - 17:30, 2017

Yoshihiro Ohta (The University of Tokyo / Mercury Inc.)

The 14th iTHES Academic-Industrial Innovation Lecture

Venue: Okochi Hall

Event Official Language: Japanese

The Riemann-Roch theorem

September 26 (Tue) at 14:00 - 15:00, 2017

Yosuke Kubota (Research Scientist, iTHEMS)

In the mid- 19th century, B. Riemann introduced the notion of Riemann surface in his Ph.D thesis on complex analysis. Together with non-Euclidean geometry, the theory of Riemann surface is a germination of modern geometry in both algebraic and analytic sense. In this talk, I will give an introduction of the theory of Riemann surface centering around the Riemann-Roch theorem. It is an important prototype of the Atiyah-Singer index theorem, the starting point of my research field.

Venue: Seminar Room #160

Event Official Language: English

iTHEMS-RIMS International Workshop on Resurgence

September 6 (Wed) - 8 (Fri), 2017

Venue: 8F, Integrated Innovation Building (IIB)

Event Official Language: English