The Case for Nonlocal Modifications of Gravity
The Case for Nonlocal Modifications of Gravity
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DOI：
10.3390/universe4080088
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发表时间：
2018-07
期刊：
影响因子：
2.9
通讯作者：
R. Woodard
中科院分区：
文献类型：
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作者：
R. Woodard
使广义相对论在大范围内发挥作用所需的大量未被探测和奇异的暗物质和暗能量表明，我们应该研究引力的修正。广义相对论唯一稳定的、基于度量的和不变的替代方案是f(R)模型。这些模型可以解释原始膨胀，但它们既不能排除暗物质，也不能排除暗能量。我主张对引力进行非局域修正，不是作为新的基本理论，而是作为原始膨胀过程中产生的红外量子所产生的引力真空极化。我还讨论了对这一想法提出的许多反对意见中的一些。
The huge amounts of undetected and exotic dark matter and dark energy needed to make general relativity work on large scales argue that we should investigate modifications of gravity. The only stable, metric-based and invariant alternative to general relativity is f(R) models. These models can explain primordial inflation, but they cannot dispense with either dark matter or dark energy. I advocate nonlocal modifications of gravity, not as new fundamental theories but rather as the gravitational vacuum polarization engendered by infrared quanta produced during primordial inflation. I also discuss some of the many objections which have been raised to this idea.