Exterior differential system for cosmological G2 perfect fluids and geodesic completeness

被引：12
|
作者：
Fernández-Jambrina, L
González-Romero, LM
机构：
[1] ETSI Navales, Dept Ensenanzas Basicas Ingn Naval, E-28040 Madrid, Spain
[2] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Teor 2, E-28040 Madrid, Spain
来源：
CLASSICAL AND QUANTUM GRAVITY | 1999年 / 16卷 / 03期
关键词：
D O I：
10.1088/0264-9381/16/3/023
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper a new formalism based on exterior differential systems is derived for perfect-fluid spacetimes endowed with an Abelian orthogonally transitive G(2) group of motions acting on spacelike surfaces. This formulation allows simplifications of Einstein equations and it can be applied for different purposes. As an example a singularity-free metric is rederived in this framework. A sufficient condition for a diagonal metric to be geodescially complete is also provided.
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页码：953 / 972
页数：20
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