论文标题
来自$ f_ {nl} $参数的可行curvaton模型
Viable Curvaton Models from the $f_{NL}$ Parameter
论文作者
论文摘要
我们展示了如何建立一个由宇宙扰动的规模依赖性非高斯的促进的库尔瓦顿通货膨胀模型。特别是，我们研究了$ f_ {nl} $参数中的符号的变化，这是Horizon Crossing curvaton场值的函数，并使用宇宙微波背景透视尺度识别它。我们设计了一个过程，以恢复提供所需$ f_ {nl} $参数的Curvaton模型。然后，我们提出了$ f_ {nl} $的具体示例并构建其父模型。我们根据对$ f_ {nl} $的考虑因素研究对该模型应用的约束。我们表明，半球不对称也可用于约束$ f_ {nl} $的规模依赖性和模型参数。
We show how to build a curvaton inflationary model motivated by scale-dependent non-Gaussianities of cosmological perturbations. In particular, we study the change of sign in the $f_{NL}$ parameter as a function of the curvaton field value at horizon crossing and identify it with the cosmic microwave background pivot scale. We devise a procedure to recover the curvaton model that provides the desired $f_{NL}$ parameter. We then present a concrete example of $f_{NL}$ and construct its parent model. We study the constraints applied to this model based on considerations taken on $f_{NL}$. We show that the hemispherical asymmetry can also be used to constrain the scale-dependence of $f_{NL}$ and the model parameters.
