期刊
CLASSICAL AND QUANTUM GRAVITY
卷 31, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/31/7/075016
关键词
bigravity; massive gravity; dark energy
类别
资金
- JSPS [22224003, 23540296, 25800136]
- Grants-in-Aid for Scientific Research [25800136, 23540296, 22224003] Funding Source: KAKEN
The bigravity models coupled with two scalar fields are constructed. We show that a wide class of the expansion history of the universe, especially corresponding to dark energy and/or inflation, can be described by a solution of the bigravity model. We discuss the stability of the solution and give the conditions for the stability. We also explicitly construct a model which gives a stable solution. By using the stable model, for an arbitrary evolution of the universe expansion, we construct the Brans-Dicke likemodel which reproduces the evolution.
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