Accelerating cosmologies from non-local higher-derivative gravity
Accelerating cosmologies from non-local higher-derivative gravity
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DOI：
10.1016/j.physletb.2008.11.060
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发表时间：
2008-09
影响因子：
4.4
通讯作者：
S. Capozziello;E. Elizalde;S. Nojiri;S. Odintsov
中科院分区：
文献类型：
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作者：
S. Capozziello;E. Elizalde;S. Nojiri;S. Odintsov
We study accelerating cosmological solutions of a general class of non-linear gravities which depend on Gauss–Bonnet and other higher derivative invariants. To achieve this goal a local formulation with auxiliary scalars for arbitrary higher-derivative non-local gravity is developed. It is demonstrated that non-local Gauss–Bonnet gravity can be reduced, in the local formulation, to a model of string-inspired scalar-Gauss–Bonnet gravity. A natural unification, in the theory here developed, of the early-time inflation epoch with a late-time acceleration stage can also be realized.
