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arXiv 0901.0756hep-thgr-qchep-ph
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暗能量和可能的替代品

Dark energy and possible alternatives

M. Sami

摘要:

本文简要回顾了研究宇宙晚期加速的各种方法。在暗能量的标量场模型的情况下,标度解的宇宙学相关性被强调。强调了各种标量场模型的基本特征。讨论了暗能量的各种替代方案,包括爱因斯坦-希尔伯特作用量的弦曲率修正,高维效应,非局部修正引力和$f(R)$引力理论。综述了宇宙学常数消失的$f(R)$模型的最新研究进展。

英文摘要:

We present a brief review of various approaches to late time acceleration of universe. The cosmological relevance of scaling solutions is emphasized in case of scalar field models of dark energy. The underlying features of a variety of scalar field models is highlighted. Various alternatives to dark energy are discussed including the string curvature corrections to Einstein-Hilbert action, higher dimensional effects, non-locally corrected gravity and $f(R)$ theories of gravity. The recent developments related to $f(R)$ models with disappearing cosmological constant are reviewed.

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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