Cosmology and stability in scalar–tensor bigravity
Cosmology and stability in scalar–tensor bigravity
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DOI：
10.1088/0264-9381/31/7/075016
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发表时间：
2013-10
影响因子：
3.5
通讯作者：
K. Bamba;Yusuke Kokusho;S. Nojiri;Norihito Shirai
中科院分区：
文献类型：
--
作者：
K. Bamba;Yusuke Kokusho;S. Nojiri;Norihito Shirai
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 like model which reproduces the evolution.
