TL;DR
This paper provides comprehensive lecture notes on celestial amplitudes, exploring their connection to asymptotic symmetries, soft theorems, celestial CFT, and holography, aimed at advancing understanding in this emerging field.
Contribution
It offers an organized overview of celestial amplitudes, including theoretical foundations, recent developments, and educational exercises, serving as a valuable resource for researchers and students.
Findings
Clarifies the role of asymptotic symmetries in celestial amplitudes
Details the organization of soft theorems into celestial CFT currents
Provides a literature guide and exercises for further study
Abstract
Lecture notes prepared for the 2021 SAGEX PhD School in Amplitudes hosted by the University of Copenhagen August 10th through 13th. Topics covered include: the manifestation of asymptotic symmetries via soft theorems, their organization into currents in a celestial CFT, aspects of the holographic dictionary, a literature guide, and accompanying exercises.
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