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arXiv 0802.4416hep-ph
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非粒子与暴胀

Unparticles and inflation

Hael Collins, R. Holman

摘要:

我们研究了非粒子在暴胀宇宙中的某些作用。非粒子本身不适合产生原始扰动,因为它们的功率谱与从观测中推断的不匹配。事实上,当非粒子的标度维数超过三分之一时,非粒子的功率谱就会发散。然而,当一个非粒子耦合到一个普通的暴胀子粒子时,环路修正可以在更长的波长上产生暴胀子功率谱的轻微增强。我们详细研究了这些来自非粒子的环路修正,以了解它们如何在微扰的波长上缩放,以及它们如何依赖于场的缩放维度。

英文摘要:

We study some of the roles for unparticles in an inflationary universe. Unparticles by themselves are not appropriate for generating the primordial perturbations since their power spectrum does not match what has been inferred from observations. In fact, when the scaling dimension for the unparticles exceeds three-halves, the unparticle power spectrum diverges. However, when a unparticle couples to an ordinary inflaton particle, loop corrections can produce a slight enhancement of the inflaton's power spectrum at longer wavelengths. We examine these loop corrections from unparticles in some detail to learn how they scale in the wavelength of a perturbation and how they depend on the scaling dimension of the field.

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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