Accelerating universe with a stable extra dimension in cuscuton gravity
Accelerating universe with a stable extra dimension in cuscuton gravity
复制标题
在 cuscuton 引力中以稳定的额外维度加速宇宙
DOI:
10.1103/physrevd.100.063531
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发表时间:
2019
影响因子:
5
通讯作者:
Soda Jiro
中科院分区:
文献类型:
--
作者:
Ito Asuka;Sakakihara Yuki;Soda Jiro
We study Kaluza-Klein cosmology in cuscuton gravity and find an exact solution describing an accelerating four-dimensional universe with a stable extra dimension. A cuscuton which is a nondynamical scalar field is responsible for the accelerating expansion, and a vector field makes the extra dimensional space stable. Remarkably, the accelerating universe in our model is not exactly de Sitter.
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