论文标题
来自加利利创世纪的原始非高斯性，而没有强耦合问题
Primordial non-Gaussianity from Galilean Genesis without strong coupling problem
论文作者
论文摘要
加利利的起源通常困扰着一个强烈的耦合问题，但是可以根据古典能量量表的创世纪和强耦合量表之间的层次结构来避免。在本文中，我们研究了没有强耦合问题的伽利略起源模型是否可以解释基于伽利略起源的两个统一框架观察到的CMB波动的统计特性。通过关注标量和张量扰动的繁殖速度的类别，我们表明，避免使用强耦合并允许略带红色倾斜标量功率谱的模型遭受标量非高斯性非高斯性的过度生产。
Galilean Genesis is generically plagued with a strong coupling problem, but this can be avoided depending on the hierarchy between a classical energy scale of genesis and a strong coupling scale. In this paper, we investigate whether or not the models of Galilean Genesis without the strong coupling problem can explain the statistical properties of the observed CMB fluctuations based on two unified frameworks of Galilean Genesis. By focusing on the class in which the propagation speeds of the scalar and tensor perturbations are constant, we show that the models avoiding strong coupling and allowing a slightly red-tilted scalar power spectrum suffer from an overproduction of a scalar non-Gaussianity.
