COSMOLOGICAL AND SOLAR-SYSTEM TESTS OF f(R) MODIFIED GRAVITY

被引：12
|
作者：
Gu, Je-An [1 ]
机构：
[1] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys LeCosPA, Taipei 10617, Taiwan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2011年 / 20卷 / 08期
关键词：
f(R) modified gravity; cosmological test; solar-system test; DARK ENERGY; ACCELERATING UNIVERSE; SUPERNOVAE; FIELD;
D O I：
10.1142/S0218271811019530
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We, the LeCosPA Dark Energy Working Group, are investigating dark energy and modified gravity as possible origins of the accelerating expansion of the present universe. In this paper we report our recent progress in modified gravity, in particular the work in arXiv:1009.3488 on the cosmological and the solar-system tests of the f(R) theory of modified gravity. In this work we found that the solar-system test ruled out the frequently studied w = -1 designer f(R) models which are cosmologically distinct from the Lambda CDM model. In addition, under the cosmological test many designer f(R) models suffer a fine-tuning problem about the choice of the initial condition of f(R).
引用
收藏
页码：1357 / 1362
页数：6
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