Publication: Asymptotic Symmetries and Charges in De Sitter Space
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Date
2011
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Institute of Physics Publishing
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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.
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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 \(I^+\).
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Keywords
gravitation and cosmology, astrophysics and astroparticles, general relativity and quantum cosmology, high energy physics
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