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arXiv 1203.2695astro-ph.COgr-qchep-ph
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引力的量子修正及其对宇宙学和天体物理学的意义

Quantum corrections to gravity and their implications for cosmology and astrophysics

Julio C. Fabris, Paulo L. C. de Oliveira, Davi C. Rodrigues, Ilya L. Shapiro, A. M. Velasquez-Toribio

摘要:

量子对引力作用的贡献在理论的高阶导数部分相对容易计算。然而,在后暴胀宇宙学和天体物理学中的应用需要对爱因斯坦-希尔伯特作用量和宇宙学常数进行修正,而这些修正我们还不能以一种一致和安全的方式导出。同时,如果我们假设这些量子项是协变的,并且它们具有相关的量值,那么它们的函数形式可以被定义为一个自由参数,这个自由参数可以在唯象基础上定义。事实证明,量子修正原则上可能会导致天体物理学和宇宙学中令人惊讶的强大和有趣的效应。

英文摘要:

The quantum contributions to the gravitational action are relatively easy to calculate in the higher derivative sector of the theory. However, the applications to the post-inflationary cosmology and astrophysics require the corrections to the Einstein-Hilbert action and to the cosmological constant, and those we can not derive yet in a consistent and safe way. At the same time, if we assume that these quantum terms are covariant and that they have relevant magnitude, their functional form can be defined up to a single free parameter, which can be defined on the phenomenological basis. It turns out that the quantum correction may lead, in principle, to surprisingly strong and interesting effects in astrophysics and cosmology.

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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