Asymptotic symmetries and charges in de Sitter space

被引：45
|
作者：
Anninos, Dionysios [1 ]
Ng, Gim Seng [1 ]
Strominger, Andrew [1 ]
机构：
[1] Harvard Univ, Ctr Fundamental Laws Nat, Cambridge, MA 02138 USA
来源：
CLASSICAL AND QUANTUM GRAVITY | 2011年 / 28卷 / 17期
关键词：
GENERAL-RELATIVITY; COSMOLOGICAL CONSTANT; CONSERVED QUANTITIES; GRAVITATIONAL WAVES; NULL INFINITY; GRAVITY; ENERGY; RENORMALIZATION; DEFINITION; TIME;
D O I：
10.1088/0264-9381/28/17/175019
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The asymptotic symmetry group (ASG) at future null infinity (I+) of asymptotically 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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页数：10
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