A note on the boundary of a static Lorentzian manifold

被引:13
|
作者
Bartolo, R
Germinario, A
Sánchez, M
机构
[1] Politecn Bari, Dipartimento Interuniv Matemat, I-70125 Bari, Italy
[2] Univ Bari, Dipartimento Interuniv Matemat, I-70125 Bari, Italy
[3] Univ Granada, Fac Ciencias, Dept Geometr & Topol, Granada 18071, Spain
关键词
geodesic; static Lorentzian manifold; boundary;
D O I
10.1016/S0926-2245(02)00062-1
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper we characterize the convexity of the boundary aS of a static (standard) Lorentzian manifold S in terms of Jacobi metrics. From this result, we also obtain: (1) a characterization of the convexity of aS computable from its "spacelike" part, (2) the equivalence between the variational and geometrical definitions of convexity for aS, and (3) a very precise result on existence of geodesics joining a point and a line on S. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:121 / 131
页数:11
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