HYPERBOLOIDAL CAUCHY DATA FOR VACUUM EINSTEIN EQUATIONS AND OBSTRUCTIONS TO SMOOTHNESS OF NULL INFINITY

被引:44
作者
ANDERSSON, L [1 ]
CHRUSCIEL, PT [1 ]
机构
[1] MAX PLANCK INST ASTROPHYS,W-8046 GARCHING,GERMANY
关键词
D O I
10.1103/PhysRevLett.70.2829
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Various works have suggested that the Bondi-Sachs-Penrose decay conditions on the gravitational field at null infinity are not generally representative of asymptotically flat spacetimes. We have made a detailed analysis of the constraint equations for ''asymptotically hyperboloidal'' initial data and find that log terms arise generically in asymptotic expansions. These terms are absent in the corresponding Bondi-Sachs-Penrose expansions, and can be related to explicit geometric quantities. We have nevertheless shown that there exists a large class of ''nongeneric'' solutions of the constraint equations, the evolution of which leads to spacetimes satisfying the Bondi-Sachs-Penrose smoothness conditions.
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页码:2829 / 2832
页数:4
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