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arXiv 1007.3571gr-qcastro-ph.COhep-th
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新型$f(T)$重力

New types of $f(T)$ gravity

Rong-Jia Yang

摘要:

近年来,人们提出了基于修正的遥平行引力理论的$f(T)$理论来解释当前宇宙的加速膨胀,其中挠率是描述引力的几何对象而不是曲率。场方程总是二阶的,比$f(R)$理论简单得多。类似于$f(R)$理论,我们考虑了三种类型的$f(T)$引力,发现它们都能引起宇宙加速,并分别具有有趣的特征。

英文摘要:

Recently $f(T)$ theories based on modifications of teleparallel gravity where torsion is the geometric object describing gravity instead of curvature have been proposed to explain the present cosmic accelerating expansion. The field equations are always second order, remarkably simpler than $f(R)$ theories. In analogy to the $f(R)$ theory, we consider here three types of $f(T)$ gravity, and find that all of them can give rise to cosmic acceleration with interesting features, respectively.

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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