A Galileon design of slow expansion: Emergent universe
A Galileon design of slow expansion: Emergent universe
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缓慢膨胀的伽利略设计:新兴宇宙
DOI:
10.1016/j.physletb.2012.11.068
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发表时间:
2013-01
影响因子:
4.4
通讯作者:
Piao, Yun-Song
中科院分区:
文献类型:
--
作者:
Liu, Zhi-Guo;Piao, Yun-Song
We parameterize the evolutions of the slow expansion, which emerges from a static state in infinite past, into different classes. We show that the scale invariant adiabatical perturbation may be generated during these evolutions, and the corresponding evolutions can be realized with generalized Galileon Lagrangians, in which there is not the ghost instability.
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