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arXiv 0801.0467hep-thastro-ph
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Curvaton情形下的大非高斯蕴涵

Large Non-Gaussianity Implication for Curvaton Scenario

Qing-Guo Huang

摘要:

我们认为在暴胀宇宙中,光标量场的典型能量密度不应小于$H^4$。该要求意味着非高斯参数$f_{NL}$通常由上面的张量-标量比$r$(即,$f_{NL}\lesssim 518\cdot r^{1\over 4}$)限定。如果是$f_{NL}=10^2$,则膨胀发生在GUT量表附近。

英文摘要:

We argue that the typical energy density of a light scalar field should not be less than $H^4$ in the inflationary Universe. This requirement implies that the non-Gaussianity parameter $f_{NL}$ is typically bounded by the tensor-scalar ratio $r$ from above, namely $f_{NL}\lesssim 518\cdot r^{1\over 4}$. If $f_{NL}=10^2$, inflation occurred around the GUT scale.

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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