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arXiv 1502.02329hep-thastro-ph.COgr-qchep-ph
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暴胀过程中引力子的四点关联函数

The four-point correlation function of graviton during inflation

Tian-Fu Fu, Qing-Guo Huang

摘要:

我们将具有正宇宙学常数的Einstein-Hilbert作用量按引力涨落展开到四阶,然后利用in-in方法计算了在deSitter展开期间产生的引力波的四点关联函数,包括接触图和交换图.此外,我们还给出了引力子的$n$点函数在圆偏振态和线偏振态下的一般性质。

英文摘要:

We expand the Einstein-Hilbert action with a positive cosmological constant up to the fourth order in terms of gravity fluctuations, and then use the in-in formalism to calculate the four-point correlation function for gravitational waves, including both contact and exchange diagrams, generated during a period of exactly de Sitter expansion. In addition, we also present the general properties of the $n$-point function of graviton in terms of both circularly and linearly polarized states.

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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