引力子非高斯性动物学
Zoology of Graviton non-Gaussianities
摘要：
我们的特点引力子的非高斯性模型的通货膨胀的德西特提升自发打破。我们讨论了Nicolis等人研究的对称性破缺模式，2015年可以维持一段时间的准de Sitter膨胀，并表明固体膨胀的对称性破缺模式允许引力子相互作用的最大自由度。我们评论这些相互作用的现象学后果。作为这种分析的副产品，我们构建了“EFT的固体通货膨胀”，它具有所有有用的功能的EFT的通货膨胀，但破碎的空间同态的情况下。
英文摘要：
We characterize graviton non-Gaussianities in models of inflation where de Sitter boosts are spontaneously broken. We discuss which of the symmetry breaking patterns studied in Nicolis et al., 2015 can sustain a period of quasi de Sitter expansion, and show that the symmetry breaking pattern of Solid Inflation allows the most freedom for graviton interactions. We comment on the phenomenological consequences of some of these interactions. As a byproduct of this analysis we construct the "EFT of Solid Inflation", which has all the useful features of the EFT of Inflation but for the case of broken spatial diffeomorphisms.
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