Title:	Asymptotic symmetries and subleading soft graviton theorem
Authors:	Campiglia, Miguel Laddha, Alok
Issue Date:	8-Dec-2014
Publisher:	American Physical Society
Citation:	Physical Review D, 2014, Vol. 90, p124028
Abstract:	Motivated by the equivalence between the soft graviton theorem and Ward identities for the supertranslation symmetries belonging to the Bondi, van der Burg, Metzner and Sachs (BMS) group, we propose a new extension (different from the so-called extended BMS) of the BMS group that is a semidirect product of supertranslations and Diff(S2). We propose a definition for the canonical generators associated with the smooth diffeomorphisms and show that the resulting Ward identities are equivalent to the subleading soft graviton theorem of Cachazo and Strominger.
Description:	Open Access
URI:	http://hdl.handle.net/2289/6194
ISSN:	1550-7998 1550-2368(Online)
Alternative Location:	http://arxiv.org/abs/1408.2228 http://dx.doi.org/10.1103/PhysRevD.90.124028 http://adsabs.harvard.edu/abs/2014PhRvD..90l4028C
Copyright:	2014 American Physical Society
Appears in Collections:	Research Papers (TP)

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