Long-wavelength iteration scheme and scalar-tensor gravity

被引：10

作者：

Comer, GL

Deruelle, N

Langlois, D

机构：

[1] OBSERV PARIS,CNRS,DEPT ASTROPHYS RELATIVISTE & COSMOL,F-92195 MEUDON,FRANCE

[2] UNIV CAMBRIDGE,DEPT APPL MATH & THEORET PHYS,CAMBRIDGE CB3 9EW,ENGLAND

来源：

PHYSICAL REVIEW D | 1997年 / 55卷 / 06期

关键词：

D O I：

10.1103/PhysRevD.55.3497

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Inhomogeneous and anisotropic cosmologies are modeled within the framework of scalar-tensor gravity theories. The inhomogeneities are calculated to third order in the so-called long-wavelength iteration scheme. We write the solutions for general scalar coupling and discuss what happens to the third-order terms when the scalar-tensor solution approaches at first order the general relativistic one. We work out in some detail the case of Brans-Dicke coupling and determine the conditions for which the anisotropy and inhomogeneity decay as time increases. The matter is taken to be that of perfect fluid with a baryotropic equation of state.

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页码：3497 / 3504

页数：8

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