TQM unit is pleased to invite you to the seminar!

Language: English

Reservation required

Application Deadline: Sep 2 (Wed)

Speaker: Mahir Can, Tulane University Title: Spherical Varieties and Combinatorics

Abstract: Let G be a reductive complex algebraic group with a Borel subgroup B. A spherical G-variety is an irreducible normal G-variety X where B has an open orbit. If X is affine, or if it is projective but endowed with a G-linearized ample line bundle, then the group action criteria for the sphericality is in fact equivalent to the representation theoretic statement that a certain space of functions (related to X) is multiplicity-free as a G-module. In this talk, we will discuss the following question about a class of spherical varieties: if X is a Schubert variety for G, then when do we know that X is a spherical L-variety, where L is the stabilizer of X in G.

We regret to inform you that CQD2020 has been cancelled due to the situation with COVID-19 | Website

This is the weekly QG group meeting. Speaker: Yasha Neiman. Title: "S-matrix vs. lightcone formalism in de Sitter space"

PhD Public Presentation

Theoretical Physics Seminar. Speaker: Yasha Neiman (Quantum Gravity). Title: "Scattering in the causal diamond"

What kind of questions should I be asking when I meet someone from another culture for the first time? How do I avoid making a bad first impression? What kind of communication strategy should I have?

“QuickFix”- improve your application materials in an interactive and a time-efficient manner!

To register CLICK HERE Post-event survey SUMMARY

Zoom seminar hosted by QG group. Speaker: Peter Woit (Columbia University). Title: Twistors and the Standard Model.

TQM unit is pleased to invite you to the seminar!

Language: English

Reservation required

Application Deadline: Sep 2 (Wed)

Language: English

Reservation required

Application Deadline: Sep 2 (Wed)

Who: English learners with intermediate or above skills What: Zoom discussion about current events in English When: 12-1 PM,every other Friday How: click to https://oist.zoom.us/j/93896302839 join at 12PM

How can we describe the cultures of others? More importantly how do we describe our own culture? Join us to find out some language that you can use to answer these questions.

https://oist.zoom.us/j/96204657749?pwd=eGxvWktiNHhKY3pCMXlSeXF2U3k4UT09

Conversation practice for Advanced Japanese speakers!

Thursdays at 17:00

September 17th - December 10th, 2020

Zoom link- https://oist.zoom.us/j/93424948586

TQM unit is pleased to inviet you to a online seminar.

JLPT (日本語能力試験）practice for all levels!

Every Tuesday from 5-6 PM

Zoom link to join- https://oist.zoom.us/j/98765166720

Speaker: Chris Bowman, University of Kent Title: Tautological p-Kazhdan–Lusztig Theory for cyclotomic Hecke algebras Abstract: We discuss a new explicit isomorphism between (truncations of) quiver Hecke algebras and Elias–Williamson’s diagrammatic endomorphism algebras of Bott–Samelson bimodules. This allows us to deduce that the decomposition numbers of these algebras (including as examples the symmetric groups and generalised blob algebras) are tautologically equal to the associated p-Kazhdan–Lusztig polynomials, provided that the characteristic is greater than the Coxeter number. This allows us to give an elementary and explicit proof of the main theorem of Riche–Williamson’s recent monograph and extend their categorical equivalence to cyclotomic Hecke algebras, thus solving Libedinsky–Plaza’s categorical blob conjecture.

Your presentation skills are just as important as the information you are presenting. Learn how to present online clearly and effectively to get your message across the audience.

To register CLICK HERE . Post-workshop survey SUMMARY

Presenter: Mr. Adrian David

Supervisor: Professor Shinobu Hikami

Co-supervisor: Professor Yasha Neiman

Title: The three-body problem from Newton to gravitational waves

Speaker: Dr. Alessandro Alberto Trani

Abstract:

The gravitational few-body problem is one of the oldest conundrums in astronomy and classical mechanics. Yet, its simplest instance, the three-body problem, has no general analytical solution and only a partial statistical solution has been achieved so far. With the birth of gravitational wave astronomy and the rise in exoplanet discoveries, the three-body problem is again becoming central to explaining astrophysical phenomena.

I will first describe our recent efforts in deriving a complete statistical solution to the non-hierarchical, chaotic three-body problem. I will then review the status of gravitational wave detections and our current understanding of their origin, and show how three-body interactions play a key role in several formation pathways of gravitational wave events.

Language: English

Reservation required

Application Deadline: Sep 2 (Wed)

Language: English

Reservation required

Application Deadline: Sep 2 (Wed)

Join the OIST information session with a cup of coffee! This session is for Japanese students currently seeking for opportunities in PhD in STEM. The sessions will be done in Japanese. The program is consisted of OIST general introduction, PhD & Research Internship admission process followed by the OIST graduate from Neural Computation Unit.

Thursday, September 10th, at 12:00 in C209 and on Zoom , Nobuaki Mizumoto (Evolutionary Genomics Unit led by Tom Bourguignon) will give a Talk on "Evolutionary perspectives of collective behavior in termites"

Senior Prof. Jun-ichiro Inoue, The University of Tokyo

PhD thesis public presentation

Presenter: Mr. Andrew Justin Wichester

Supervisor: Professor Keshav Dani

Assistant Professor Kei Takahashi, The University of Tokyo

TQM unit is pleased to invite you to our seminar!

*Postponed due to typhoon* Monday, August 31 2020, at 12:00 in C210 and on Zoom , Nobuaki Mizumoto (Evolutionary Genomics Unit led by Tom Bourguignon) will give a Talk on "Evolutionary perspectives of collective behavior in termites"

PhD Public Presentation

An OIST neuroscience online seminars (ONOS) talk.

Abstract

The visual system is a complex, hierarchically-organised information processing network. Counter-intuitively, successive areas contain less information about a scene, but neural activity is structured to better represent specific information. For example, neurons in primate area MT convey little colour information, but motion direction can be linearly decoded from their activity. The ongoing activity of individual neurons is highly variable, meaning reliable computation depends on collaborative processing across neural populations. However, it remains unclear how visual information is reliably represented across neurons within an area, and how these representations are transformed between areas to extract specific stimulus properties. To address this, we record visually-evoked activity simultaneously from dozens of neurons in V1 and MT in marmosets.

We use decoding techniques to predict stimulus orientation or direction from activity across a neural population. This has allowed us to show that neural representations are affected by stimulus history: recent motion biases predictions in a manner consistent with perceptual illusions; and luminance and contrast changes affect orientation coding, again in a manner consistent with human sensitivity.

We study inter-area communication by comparing the timing of action potentials in V1 with local field potentials (LFP, a population measure of local dendritic activity) in MT. We have shown that action potentials preferentially occur at specific phases of the LFP, and that motion information is best communicated from V1 to MT at specific phases.

Collectively, this suggests that hierarchical information processing depends on action potentials in privileged subsets of neurons occurring in privileged time windows.

Zoom details

Zoom Meeting link: https://oist.zoom.us/j/95700149323?pwd=VWQxY0FGQmxVQmtUTVZ2SXRnMGx6dz09

Meeting ID: 957 0014 9323 Passcode: 855303

“QuickFix”- learn how to use LinkedIn in an interactive and a time-efficient manner!

To register CLICK HERE Post-event survey SUMMARY

Title : More quantum noise from wormholes

Abstract : We are going to discuss the nice paper by Douglas Stanford "More quantum noise from wormholes" . Sudip Ghosh will lead the discussion.

TQM unit is pleased to invite you to our seminar!

For OIST members:

Users meeting and Seminar are registration free. We look forward to your participation via Zoom.

For Non-OIST members:

Please contact ias@oist.jp for Seminar sign up. (Users meeting is an internal event.)

Hoban et al. (2020) "Impact of α-synuclein pathology on transplanted hESC-derived dopaminergic neurons in a humanized α-synuclein rat model of PD" PNAS, 117 (26) 15209-15220.

Reviewed/presented for the journal club by Professor Gordon Arbuthnott from the Brain Mechanism for Behaviour Unit.

Zoom Meeting link: https://oist.zoom.us/j/95700149323?pwd=VWQxY0FGQmxVQmtUTVZ2SXRnMGx6dz09

Meeting ID: 957 0014 9323 Passcode: 855303

Dr. Arren Bar-Even, Research Group Leader, Max Planck Institute of Molecular Plant Physiology

TQM unit is pleased to invite you to our zoom seminar!

Date and Time:

Monday, August 17, 2020 - 15:00

Location:

Seminar Room Lab4 F01 or via Zoom link below

Speaker:

Dr. Letizia Marvaldi, Department of Biomolecular Sciences, Weizmann Institute of Science, Israel.

Title:

An importin mechanism in chronic pain

Hoban et al. (2020) "Impact of α-synuclein pathology on transplanted hESC-derived dopaminergic neurons in a humanized α-synuclein rat model of PD" PNAS, 117 (26) 15209-15220.

Reviewed/presented for the journal club by Professor Gordon Arbuthnott from the Brain Mechanism for Behaviour Unit.

Zoom details will be announced closer to the date.

Title : Twistorial superparticles, partial SUSY breaking and Higher spin fields on AdS(4)

Abstract : We are going to discuss the nice paper by Mikhail Plyushchay, Dmitri Sorokin and Mirian Tsulaia "Higher Spins from Tensorial Charges and OSp(N|2n) Symmetry" . Mirian Tsulaia will lead the discussion.

Theoretical Physics Seminar. Speaker: Karol Gietka (Quantum Systems). Title: "Quantum Simulators in Other Frames of Reference"

Title : The spectrum of Laplacian on moduli space via Liouville theory

Abstract : We are going to discuss the nice talk by Sarah Harrison on String Math 2020 conference "The spectrum on M_{0,4} via Liouville theory" . Slava Lysov will lead the discussion.

Presenter: Mr. Hong Huat Hoh

Supervisor: Professor Tadashi Yamamoto

Co-supervisor: Professor Ye Zhang

Audience: OIST researchers and students

Hosted by Mathematics Department, Kyoto University.

https://www.math.kyoto-u.ac.jp/en/event/seminar/4419

Prof. Speyer will give a talk at Lab4 F01 and it will be seen on Zoom.

Title : Conformal higher spin gauge models in curved background

Speakers : Sergei Kuzenko and Michael Ponds

Abstract : Sergei Kuzenko and Michael Ponds from The University of Western Australia will tell us about conformal higher spin gauge models in curved background. The talk is based on their two recent papers "Generalised conformal higher-spin fields in curved backgrounds" and "New locally (super)conformal gauge models in Bach-flat backgrounds" .

Speaker: Mr. Sebastien Lapointe

Supervisor: Prof. Julia Khusnutdinova

Unit: Coordination Chemistry and Catalysis Unit

Audience: OIST researchers and students

Hosted by: Theory of Quantum Matter unit (Nic Shannon)