# Asymptotic Symmetries and Charges in De Sitter Space

 Title: Asymptotic Symmetries and Charges in De Sitter Space Author: Anninos, Dionysios; Ng, Gim Seng; Strominger, Andrew E. Note: Order does not necessarily reflect citation order of authors. Citation: Anninos, Dionysios, Gim Seng Ng, and Andrew Strominger. 2011. Asymptotic symmetries and charges in de Sitter space. Classical and Quantum Gravity 28(17): 175019. Full Text & Related Files: 1009.4730v1.pdf (322.7Kb; PDF) Abstract: The asymptotic symmetry group (ASG) at future null infinity $$(I^+)$$ of four-dimensional de Sitter spacetimes is defined and shown to be given by the group of three-dimensional diffeomorphisms acting on $$I^+$$. Finite charges are constructed for each choice of ASG generator together with a two-surface on $$I^+$$. A conservation equation is derived relating the evolution of the charges with the radiation flux through $$I^+$$. Published Version: doi:10.1088/0264-9381/28/17/175019 Other Sources: http://arxiv.org/abs/1009.4730 Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:8087212 Downloads of this work: