arXiv 1503.080972015-03hep-phastro-ph.CO

Goldstone通货膨胀

Goldstone Inflation

Djuna Croon, Veronica Sanz, Jack Setford

备注：: 28 pages, 6 figures. Version published in JHEP

摘要：

将暴胀子与伪戈德斯通玻色子区分开来，可以解释暴胀子势的平坦性。成功的戈德斯通暴胀还应该能抵抗紫外修正，比如量子引力：用有效场论的语言来说，这意味着所有尺度都是次普朗克尺度。在本文中，我们提出的方案，实现这两个要求，通过检查戈德斯通潜在的科尔曼-温伯格贡献所产生的结构。我们专注于单场模型，我们注意到，玻色子和费米子的贡献是必需的，旋量费米子表示可以产生正确的潜在形状。然后，我们评估的约束非高斯性从高导数的相互作用，发现戈德斯通玻色子散射公理约束占上风，目前的CMB测量。对CMB数据的拟合可以连接到Goldstone暴胀的UV完成，找到新共振谱中的关系。最后，我们将展示如何在相同的背景下实现混合通货膨胀，其中暴胀子和瀑布场都有一个共同的起源戈德斯通。

英文摘要：

Identifying the inflaton with a pseudo-Goldstone boson explains the flatness of its potential. Successful Goldstone Inflation should also be robust against UV corrections, such as from quantum gravity: in the language of the effective field theory this implies that all scales are sub-Planckian. In this paper we present scenarios which realise both requirements by examining the structure of Goldstone potentials arising from Coleman-Weinberg contributions. We focus on single-field models, for which we notice that both bosonic and fermionic contributions are required and that spinorial fermion representations can generate the right potential shape. We then evaluate the constraints on non-Gaussianity from higher-derivative interactions, finding that axiomatic constraints on Goldstone boson scattering prevail over the current CMB measurements. The fit to CMB data can be connected to the UV completions for Goldstone Inflation, finding relations in the spectrum of new resonances. Finally, we show how hybrid inflation can be realised in the same context, where both the inflaton and the waterfall fields share a common origin as Goldstones.

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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