Sub-subleading soft gravitons: New symmetries of quantum gravity?

Due to the seminal work of Weinberg, Cachazo and Strominger we know that tree level quantum gravity amplitudes satisfy three factorization constraints. Building on previous works which relate two of these constraints to symmetries of gravity at null infinity, we present strong evidence that the thir...

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Main Authors: Miguel Campiglia, Alok Laddha
Format: Article
Language:English
Published: Elsevier 2017-01-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269316307092
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author Miguel Campiglia
Alok Laddha
author_facet Miguel Campiglia
Alok Laddha
author_sort Miguel Campiglia
collection DOAJ
description Due to the seminal work of Weinberg, Cachazo and Strominger we know that tree level quantum gravity amplitudes satisfy three factorization constraints. Building on previous works which relate two of these constraints to symmetries of gravity at null infinity, we present strong evidence that the third constraint is also equivalent to a new set of symmetries. Our analysis suggests that the symmetry group of quantum gravity may be richer than the BMS group –or infinite dimensional extension thereof– previously considered.
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spelling doaj.art-d81fb8ddf4e64683a380de12ec2350872022-12-21T21:52:23ZengElsevierPhysics Letters B0370-26931873-24452017-01-01764C21822110.1016/j.physletb.2016.11.046Sub-subleading soft gravitons: New symmetries of quantum gravity?Miguel Campiglia0Alok Laddha1Instituto de Física, Facultad de Ciencias, Iguá 4225, 11400 Montevideo, UruguayChennai Mathematical Institute, Siruseri 603103, IndiaDue to the seminal work of Weinberg, Cachazo and Strominger we know that tree level quantum gravity amplitudes satisfy three factorization constraints. Building on previous works which relate two of these constraints to symmetries of gravity at null infinity, we present strong evidence that the third constraint is also equivalent to a new set of symmetries. Our analysis suggests that the symmetry group of quantum gravity may be richer than the BMS group –or infinite dimensional extension thereof– previously considered.http://www.sciencedirect.com/science/article/pii/S0370269316307092
spellingShingle Miguel Campiglia
Alok Laddha
Sub-subleading soft gravitons: New symmetries of quantum gravity?
Physics Letters B
title Sub-subleading soft gravitons: New symmetries of quantum gravity?
title_full Sub-subleading soft gravitons: New symmetries of quantum gravity?
title_fullStr Sub-subleading soft gravitons: New symmetries of quantum gravity?
title_full_unstemmed Sub-subleading soft gravitons: New symmetries of quantum gravity?
title_short Sub-subleading soft gravitons: New symmetries of quantum gravity?
title_sort sub subleading soft gravitons new symmetries of quantum gravity
url http://www.sciencedirect.com/science/article/pii/S0370269316307092
work_keys_str_mv AT miguelcampiglia subsubleadingsoftgravitonsnewsymmetriesofquantumgravity
AT alokladdha subsubleadingsoftgravitonsnewsymmetriesofquantumgravity