Further exact cosmological solutions to higher-order gravity theories

被引：114
|
作者：
Clifton, T [1 ]
Barrow, JD [1 ]
机构：
[1] Univ Cambridge, Ctr Math Sci, DAMTP, Cambridge CB3 0WA, England
来源：
CLASSICAL AND QUANTUM GRAVITY | 2006年 / 23卷 / 09期
关键词：
D O I：
10.1088/0264-9381/23/9/011
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the effect of deviations from general relativity on approach to the initial singularity by finding exact cosmological solutions to a wide class of fourth-order gravity theories. We present new anisotropic vacuum solutions of modified Kasner type and demonstrate the extent to which they are valid in the presence of non-comoving perfect-fluid matter fields. The infinite series of Mixmaster oscillations seen in general relativity will not occur in these solutions, except in unphysical cases.
引用
收藏
页码：2951 / 2962
页数：12
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