一致违反非高斯一致性关系
Consistently violating the non-Gaussian consistency relation
摘要：
暴胀的非吸引子模型的特征在于曲率扰动的超视界演化，引入了双谱的压缩极限和功率谱的谱指数之间的非高斯一致性关系的破坏。在这项工作中，我们表明，双谱的压缩极限的非吸引子模型继续尊重的背景演变所决定的关系。我们将展示如何推导出这种关系，只使用对称参数，而不需要解决运动方程的扰动。
英文摘要：
Non-attractor models of inflation are characterized by the super-horizon evolution of curvature perturbations, introducing a violation of the non-Gaussian consistency relation between the bispectrum's squeezed limit and the power spectrum's spectral index. In this work we show that the bispectrum's squeezed limit of non-attractor models continues to respect a relation dictated by the evolution of the background. We show how to derive this relation using only symmetry arguments, without ever needing to solve the equations of motion for the perturbations.
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