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Date: Wed, 2 Jul 2025 13:03:36 +0900
To: sg-l__AT__yukawa.kyoto-u.ac.jp
Subject: [Sg-l:9506] Komaba Lectures on Black Holes, Gravitational Waves, and Scattering Amplitudes (July 22-24, UTokyo-Komaba)
From: Toshifumi Noumi (Sg-l 経由) 

皆様

７月２２日（火）から７月２４日（木）に、東京大学駒場キャンパスで青木勝輝氏（京都大学）と大下翔誉氏（京都大学）による「ブラックホール摂動論と散乱振幅」に関するレクチャーが以下の要領で開催されます。興味のある方は参加登録の上、是非ご参加ください。よろしくお願いいたします。

野海

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Komaba Lectures on Black Holes, Gravitational Waves, and Scattering Amplitudes
https://sites.google.com/g.ecc.u-tokyo.ac.jp/komaba-bh-2025/

Date: July 22-24
Location: The University of Tokyo-Komaba

Lecturers:
1. Naritaka Oshita (YITP, Hakubi Center, Kyoto U) “Black Hole Perturbation Theory”
Gravitational waves emitted by a ringing black hole provide a unique opportunity to test gravity in the strong-field regime. This lecture series will introduce black hole perturbation theory as a powerful framework for modeling such signals. Key topics include the excitation of quasinormal modes, the black hole S-matrix or greybody factors, and their role in constructing accurate gravitational-wave templates. If time permits, I will also discuss recent developments, open problems, and future possible directions in the study of black hole ringdown.

2. Katsuki Aoki (YITP, Kyoto U) “To Black Hole from Scattering Amplitude"
Recently, there has been growing attention to applying quantum field-theoretic techniques, such as scattering amplitudes, to problems of classical gravity. It has led to the highest precision calculations of gravitational two-body systems, refined connections between classical and quantum physics, and a novel perspective on black holes. In this lecture, I will start with some basics of scattering amplitudes and their relation to classical observables. I will then discuss how the scattering amplitudes provide new insights into black holes, especially their spin and horizon.
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