Effective metric in nonlinear scalar field theories

被引：9
|
作者：
Goulart, E. [1 ]
Perez Bergliaffa, Santiago Esteban [2 ]
机构：
[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
[2] Univ Estado Rio de Janeiro, Inst Fis, Dept Fis Teor, BR-20550013 Rio De Janeiro, Brazil
来源：
PHYSICAL REVIEW D | 2011年 / 84卷 / 10期
关键词：
HYPERBOLIC STATIC SPACETIMES; DYNAMICS;
D O I：
10.1103/PhysRevD.84.105027
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We discuss several features of the propagation of perturbations in nonlinear scalar field theories using the effective metric. It is shown that the effective metric can be classified according to whether the gradient of the scalar field is timelike, null, or spacelike, and this classification is illustrated with two examples. We shall also show that different signatures for the effective metric are allowed.
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页数：8
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