Tesi etd-08172016-184514 |
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Tipo di tesi
Tesi di laurea magistrale
Autore
HEISSENBERG, CARLO
URN
etd-08172016-184514
Titolo
Asymptotic Symmetries of Gravity and Higher-Spin Theories
Dipartimento
FISICA
Corso di studi
FISICA
Relatori
relatore Dott. Francia, Dario
correlatore Prof. Konishi, Kenichi
correlatore Prof. Konishi, Kenichi
Parole chiave
- asymptotic symmetries
- gauge symmetry
- higher spins
- soft theorems
Data inizio appello
21/09/2016
Consultabilità
Completa
Riassunto
The present work aims to propose a higher-spin generalization of the connection, recently pointed out, between infinite-dimensional asymptotic symmetries of gravity/QED and soft theorems in particle physics. To this purpose, we first set the stage for the current debate on the topic by reviewing the main results about asymptotically flat spaces, together with Weinberg's celebrated soft theorems. We then show that, under a specific choice of falloff conditions, it is indeed possible to retrieve an infinite-dimensional asymptotic symmetry group for any integer spin, whose corresponding Ward identities are equivalent to Weinberg's soft factorization theorem.
In addition, we also address the definition of asymptotic symmetries in higher-dimensional spacetimes. To tackle this problem we provide a geometric argument supporting the existence of an infinite-dimensional asymptotic symmetry group in any dimension.
In addition, we also address the definition of asymptotic symmetries in higher-dimensional spacetimes. To tackle this problem we provide a geometric argument supporting the existence of an infinite-dimensional asymptotic symmetry group in any dimension.
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