Topics in Asymptotic Symmetries and Infrared Effects

Abstract

Motivated by connections with observable phenomena, in particular with soft factorization theorems for scattering amplitudes and with memory effects, renewed interest has been recently shown in the subject of asymptotic symmetries at null infinity. The two main goals of this Ph.D. thesis are, first, to review the main aspects of the connection between such symmetries and observable effects in the context of gravity, electromagnetic and Yang-Mills theory in four dimensions and, second, to present results concerning the extension of this program to the case of spacetimes of arbitrary dimension, either even or odd, to the emission or absorption of soft scalar quanta, in connection with their dual description, and to theories containing massless higher-spin fields.

arXiv commentPh.D. thesis, advisor: Dario Francia. 167 pages, 2 figures

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Cited by in corpus (2)

• Asymptotic symmetries of Yang-Mills fields in Hamiltonian formulation
• $p$-Forms on the Celestial Sphere