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arXiv 0709.0294astro-phgr-qchep-th
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膜世界暴胀:光谱指数的慢滚修正

Brane-world inflation: slow-roll corrections to the spectral index

Kazuya Koyama, Andrew Mennim, David Wands

摘要:

我们在一个五维非紧致体时空中,对四维标量场驱动的暴胀所引起的原始密度扰动的慢滚修正进行了量化。虽然经典膜世界解和标准四维解之间的差异在早期很大,但量子涨落产生的扰动在后期的振幅变化在慢滚参数中是一阶的,导致对光谱指数的二阶慢滚修正。这证实了文献中以前的工作正确地给出了前导阶效应。

英文摘要:

We quantify the slow-roll corrections to primordial density perturbations arising from inflation driven by a four-dimensional scalar field with a monomial potential in a five-dimensional non-compact bulk spacetime. Although the difference between the classical brane-world solutions and standard four-dimensional solutions is large at early times, the change to the amplitude at late times of perturbations generated from quantum fluctuations is first-order in slow-roll parameters, leading to second-order slow-roll corrections to the spectral index. This confirms that the leading-order effects are correctly given by previous work in the literature.

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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