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arXiv 0710.5232hep-thastro-phgr-qc
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从暴胀到非最小修正引力下的暗能量

From inflation to dark energy in the non-minimal modified gravity

Shin'ichi Nojiri, Sergei D. Odintsov, Petr V. Tretyakov

摘要:

考虑了修正的引力与物质拉格朗日的非极小耦合对宇宙早期和晚期的描述。这种$F(R)$($F(G)$)引力在不存在非最小耦合的情况下是可行的理论,它通过了局部测试并再现了$Λ$ CDM时代。对于非最小引力耦合函数的定性相似的选择,表明早期暴胀和晚期宇宙加速的统一描述是可能的。有趣的是,支持暴胀时代的物质(标量)在晚期被引力屏蔽。因此,它可能在当前宇宙中实际上是不可见的。

英文摘要:

We consider the modified gravity non-minimally coupled with matter Lagrangian for the description of early-time and late-time universe. Such $F(R)$ ($F(G)$) gravity in the absence of non-minimal coupling is viable theory which passes the local tests and reproduces the $Λ$CDM era. For qualitatively similar choice of non-minimal gravitational coupling function it is shown that the unified description of early-time inflation and late-time cosmic acceleration is possible. It is interesting that matter (scalar) which supports the inflationary era is gravitationally screened at late times. Hence, it may be effectively invisible at current universe.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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