＜＜＜「@」を「__AT__」に置き換えています＞＞＞

From: Hidehiko Shimada
Date: Fri, 17 Mar 2023 15:54:48 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:7407] 第15回極限宇宙コロキウム, April 13th 22:00-, 15th ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第15回コロキウムを4月13日(木)の22:00から開催予定です。
講演者はAndrew Stromingerさん(ハーヴァード大学)で、"Cosmic ER=EPR"というタイトルで講演をしていただきます。
22:00から23:00までがコロキウム講演、23:00から24:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/03/Poster2023April.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 15th Extreme Universe Colloquium]

[Date and place]
April 13th (Thu), Colloquium talk: 22:00-23:00 (JST).
Followed by Online coffee time during 23:00-24:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/03/Poster2023April.pdf

[Speaker]
Prof. Andrew Strominger (Harvard University)

[Title]
Cosmic ER=EPR

[Abstract]
In the dS/CFT correspondence, bulk states on global spacelike slices
of de Sitter space are dual to (in general) entangled states in the
tensor product of the dual CFT Hilbert space with itself. We show,
using a quasinormal mode basis, that the Euclidean vacuum (for free
scalars in a certain mass range) is a thermofield double state in the
dual CFT description, and that the global de Sitter geometry emerges
from quantum entanglement between two copies of the CFT. Tracing over
one copy of the CFT produces a mixed thermal state describing a single
static causal diamond.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Tue, 2 May 2023 10:33:33 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:7515] 第16回極限宇宙コロキウム, May 24th 16:00-, 16th ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第16回コロキウムを5月24日(水)の16:00から開催予定です。
講演者は中村 泰信さん(東京大学/理研)で、"Superconducting circuits for quantum
technologies"というタイトルで講演をしていただきます。
16:00から17:00までがコロキウム講演、17:00から18:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/05/Poster2023May.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 16th Extreme Universe Colloquium]

[Date and place]
May 24th (Wed), Colloquium talk: 16:00-17:00 (JST).
Followed by Online coffee time during 17:00-18:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/05/Poster2023May.pdf

[Speaker]
Prof. Yasunobu Nakamura (University of Tokyo/RIKEN)

[Title]
Superconducting circuits for quantum technologies

[Abstract]
Interacting many-body systems are found at every level in the
hierarchy of physics. Collective modes in such systems describe their
elementary excitations, and the corresponding quasiparticles or
‘quanta’ often become constituent elements of a many-body system at
the next level in the hierarchy.
Superconducting circuits are many-body systems of interacting
electrons designed and fabricated in the form of electrical circuits
and are playing a major role in the development of modern quantum
technologies based on quantum information science. Collective
excitation modes in the circuits are used as highly coherent
superconducting qubits. With strong nonlinearity due to the Josephson
effect and large dipole moments that allow fast control and readout of
the quantum states, they are considered one of the most promising
platforms for implementing quantum information processors. In
addition, the qubits are coupled to resonators and waveguides to
exploit the properties of those bosonic modes, either localized or
propagating, as a versatile tool for microwave quantum optics and
quantum sensing. The auxiliary modes can also be replaced with other
collective modes found in solid-state physics, e.g., acoustic and
magnetic ones, to form hybrid quantum systems, expanding the realm of
quantum technologies.


[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Mon, 29 May 2023 11:15:40 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:7556] 第17回極限宇宙コロキウム, June 6th 19:00-, 17th ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第17回コロキウムを6月6日(火)の19:00から開催予定です。
講演者はHarvey Reallさん(ケンブリッジ大学)で、"Creases, corners and caustics:
non-smooth features on black hole horizons"というタイトルで講演をしていただきます。
19:00から20:00までがコロキウム講演、20:00から21:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/05/Poster2023June.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 17th Extreme Universe Colloquium]

[Date and place]
June 6th (Tue), Colloquium talk: 19:00-20:00 (JST).
Followed by Online coffee time during 20:00-21:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/05/Poster2023June.pdf

[Speaker]
Prof. Harvey Reall (University of Cambridge)

[Title]
Creases, corners and caustics: non-smooth features on black hole horizons

[Abstract]
The event horizon of a dynamical black hole is usually a non-smooth
hypersurface. I shall describe the types of non-smooth structure that
can arise on a horizon that is smooth at late time. This includes
creases, corners and caustic points.
I shall discuss ``perestroikas'' of these structures, in which they
undergo a qualitative change at an instant of time. A crease
perestroika gives an exact local description of the event horizon near
the ``instant of merger'' of a generic black hole merger. Other crease
perestroikas describe horizon nucleation or collapse of a hole in a
toroidal horizon. I shall discuss the possibility that creases
contribute to black hole entropy, and the implications of
non-smoothness for higher derivative terms in black hole entropy. This
talk is based on joint work with Maxime Gadioux.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Mon, 3 Jul 2023 10:33:24 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:7646] 第18回極限宇宙コロキウム, July 24th 10:00-, 18th ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第18回コロキウムを7月24日(月)の10:00から開催予定です。
講演者は藤堂 眞治さん(東京大学)で、"Markov-Chain Monte Carlo in Tensor-Network
Representation"というタイトルで講演をしていただきます。
10:00から11:00までがコロキウム講演、11:00から12:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/07/Poster2023July.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 18th Extreme Universe Colloquium]

[Date and place]
July 24th (Mon), Colloquium talk: 10:00-11:00 (JST).
Followed by Online coffee time during 11:00-12:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/07/Poster2023July.pdf

[Speaker]
Prof. Synge Todo (University of Tokyo)

[Title]
Markov-Chain Monte Carlo in Tensor-Network Representation

[Abstract]
The partition functions of various classical and quantum lattice
models can be represented as tensor networks. However, the exact
contraction of a tensor network is generally exponentially expensive,
and some approximation, such as low-rank approximation based on
singular value decomposition, is usually required. Recently, we
proposed a new tensor contraction method based on Monte Carlo
sampling. The proposed method combines the stochastic basis
transformation of tensors with the Markov chain Monte Carlo framework.
It can entirely remove the systematic error due to a finite bond
dimension of the low-rank approximation while keeping the high
accuracy of the tensor-network method. We also demonstrate how the
proposed method works for systems with negative (or complex) weights,
where the standard Markov chain Monte Carlo suffers from a severe sign
problem.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Tue, 19 Sep 2023 13:03:41 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:7823] 第19回極限宇宙コロキウム, October 2nd 22:00-, 19th ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第19回コロキウムを10月2日(月)の22:00から開催予定です。
講演者はBrian Swingleさん(ブランダイス大学)で、"Hydrodynamics and Random
Matrices"というタイトルで講演をしていただきます。
22:00から23:00までがコロキウム講演、23:00から24:00までがonline coffee break(講演者との質疑応答の時間)です。
(本講演は基研で10月6日(金)まで開催されております滞在型研究会 "Quantum Information, Quantum Matter
and Quantum Gravity"
https://www2.yukawa.kyoto-u.ac.jp/~qimg2023/index.php
の招待講演でもあります。)

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/09/Poster2023October.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 19th Extreme Universe Colloquium]

[Date and place]
October 2nd (Mon), Colloquium talk: 22:00-23:00 (JST).
Followed by Online coffee time during 23:00-24:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/09/Poster2023October.pdf

[Speaker]
Prof. Brian Swingle (Brandeis University)

[Title]
Hydrodynamics and Random Matrices

[Abstract]
Many quantum systems exhibit a surprising commonality: their energy
levels are statistically similar to the eigenvalues of a random
Hermitian matrix. This phenomenon is known as random matrix
universality, and it has been observed in systems ranging from nuclei
(Wigner's original idea) to quantum materials to black holes (and
beyond). The wide-ranging applicability of this idea calls for an
equally wide-ranging theory. At the same time, these various physical
systems are not literally described by random matrices, so any theory
should also be able to compute the limitations of random matrix
universality. I will discuss recent work in which we have developed an
effective theory of spectral statistics which connects the statistical
properties of energy levels to the thermalization properties of the
system, with qualitatively different behaviors depending on whether
the system is a fluid or a glass or has a broken symmetry. I will also
discuss surprising deviations from random matrix universality that
occur at late time and that are connected to properties of the Riemann
zeta function and its generalizations.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Tue, 31 Oct 2023 10:00:35 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:7950] 第20回極限宇宙コロキウム, November 14th 10:00-, 20th ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第20回コロキウムを11月14日(火)の10:00からオンライン/京大基研(益川ホール)で開催予定です。
講演者はAnne Broadbentさん(オタワ大学)で、" Quantum Unclonability and
Cryptography"というタイトルで講演をしていただきます。
10:00から11:00までがコロキウム講演、11:00から12:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/10/Poster2023Nov.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 20th Extreme Universe Colloquium]

[Date and place]
Online/Yukawa Institute for Theoretical Physics, Kyoto University(Maskawa Hall)
November 14th (Tue), Colloquium talk: 10:00-11:00 (JST).
Followed by Online coffee time during 11:00-12:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/10/Poster2023Nov.pdf

[Speaker]
Prof. Anne Broadbent (University of Ottawa)

[Title]
 Quantum Unclonability and Cryptography

[Abstract]
According to the unclonability principle of quantum information, it is
not possible, in general, to duplicate an unknown quantum state.
Quantum Cryptography benefits from this principle since any attack is
subject to the unclonability principle; this creates a myriad of
opportunities for quantum cryptographers.

In this talk, we will discuss how unclonability permeates quantum
cryptography: from the early findings on quantum money and quantum key
distribution, to recent work on unclonable quantum encryption,
certified deletion, and unclonable software.


[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Wed, 15 Nov 2023 10:10:29 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:8001] 第21回極限宇宙コロキウム, December 1st 15:30-, 21st ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第21回コロキウムを12月1日(金)の15:30から開催予定です。
講演者はNicolas Yunesさん(イリノイ大学)で、"Probing strong gravity when gravity
waves"というタイトルで講演をしていただきます。
15:30から16:30までがコロキウム講演、16:30から17:30までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/11/Poster2023December.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 21st Extreme Universe Colloquium]

[Date and place]
December 1st (Fri), Colloquium talk: 15:30-16:30 (JST).
Followed by Online coffee time during 16:30-17:30 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2023/11/Poster2023December.pdf

[Speaker]
Prof. Nicolas Yunes (University of Illinois at Urbana-Champaign)

[Title]
Probing strong gravity when gravity waves

[Abstract]
The recent gravitational wave observations of the collision of black
holes and neutron stars by the advanced LIGO and Virgo detectors have
allowed us to pierce into the strong gravity regime, where the
gravitational interaction is simultaneously unfathomably large and
wildly dynamical. These gravitational waves encode a trove of
information about physics that is prime for the taking, including
potential revelations about the validity of Einstein's theory and
constraints of possible deviations in extreme astrophysical
environments. In this talk, I will describe some of the physics
inferences we have made about gravity and what lies beyond from
gravitational wave observations, and the future inferences that will
come next.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Fri, 19 Jan 2024 14:39:30 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:8140] 第22回極限宇宙コロキウム, February 13th 10:00-, 22nd ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第22回コロキウムを2月13日(火)の10:00から開催予定です。
講演者は橋坂 昌幸さん(東京大学物性研究所)で、"Electron dynamics at boundaries of quantum
many-body systems"というタイトルで講演をしていただきます。
10:00から11:00までがコロキウム講演、11:00から12:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2024/01/Poster2024Feb.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 22nd Extreme Universe Colloquium]

[Date and place]
February 13th (Tue), Colloquium talk: 10:00-11:00 (JST).
Followed by Online coffee time during 11:00-12:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2024/01/Poster2024Feb.pdf

[Speaker]
Prof. Masayuki Hashisaka (University of Tokyo, ISSP)

[Title]
Electron dynamics at boundaries of quantum many-body systems

[Abstract]
Scattering processes of particles and waves at a boundary provide a
common diagnostic method for investigating unknown properties of bulk
matter. This fact has a much more profound meaning in quantum
many-body physics, where electron correlation is often linked to the
emergence of exotic particles. This talk discusses electron dynamics
at the boundaries of various quantum many-body systems, mainly for the
quantum Hall systems. Coupling and fractionalization of elementary
excitations show up in scattering processes at the boundaries,
highlighting the quantum and correlated nature of electrons in
condensed matter.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: Hidehiko Shimada
Date: Wed, 28 Feb 2024 11:44:38 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:8240] 第23回極限宇宙コロキウム, March 14th 16:00-, 23rd ExU Colloquium

素粒子論グループの皆様

学術変革領域A「極限宇宙」では、第23回コロキウムを3月14日(木)の16:00から開催予定です。
講演者はSuvrat Rajuさん(ICTS)で、"How is quantum information localized in
quantum gravity?"というタイトルで講演をしていただきます。
16:00から17:00までがコロキウム講演、17:00から18:00までがonline coffee break(講演者との質疑応答の時間)です。

ポスターは

https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2024/02/Poster2024Mar.pdf

をご覧ください。

ご関心を持たれる多くの皆様のご参加をお待ちしております。
前回までのコロキウムの際に既に登録されている方は、再度の登録は不要です。
今回新しく登録される方は、

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

から登録を開催3日前までにお願いします。
登録された方にzoom情報を送付いたします。

アブストラクトは下記の英語のアナウンスをご覧ください。

島田 英彦（京大基研）


================================================================

[The 23rd Extreme Universe Colloquium]

[Date and place]
March 14th (Thu), Colloquium talk: 16:00-17:00 (JST).
Followed by Online coffee time during 17:00-18:00 (JST)

[Poster]
https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/wpsite/wp-content/uploads/2024/02/Poster2024Mar.pdf

[Speaker]
Prof. Suvrat Raju (International Centre for Theoretical Sciences (ICTS))

[Title]
How is quantum information localized in quantum gravity?

[Abstract]
A careful analysis of the gravitational constraints reveals that
quantum gravity localizes information differently from ordinary
quantum field theories --- an effect called the holography of
information. We review the results obtained so far for asymptotically
flat spacetimes, asymptotically anti-de Sitter spacetimes, and
asymptotically de Sitter spacetimes. About some simple states, it is
surprising that these effects are visible in perturbation theory. In a
different regime, we explain the significance of the holography of
information for understanding black-hole evaporation and the
information paradox. We discuss several interesting open questions.

[Registration]
Please register from the following registration form by at least 3
days prior to the talk.
If you did this for any one of our previous events, it is not
necessary to do it again.

https://docs.google.com/forms/d/1gApd5ioPZlklqygK1et77dyqm5hWytczJsSyBHnDCWA/viewform?ts=614330ea&edit_requested=true#responses

[Further Information]
For our events, please visit the webpage:
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/events/

Funded by
FY2021-2025 MEXT -KAKENHI- Grant-in-Aid for Transformative Research
Areas (A) The Natural Laws of Extreme Universe
A New Paradigm for Spacetime and Matter from Quantum Information
https://www2.yukawa.kyoto-u.ac.jp/%7Eextremeuniverse/en/
================================================================