标题： 具有平滑退出的暴胀的精确扰动 显示英文标题

标题： Exact Perturbations for inflation with smooth exit

摘要： 为哈勃参数或标量场势能的玩具模型已被用于分析标量扰动通过从暴胀到辐射时代的平滑转变时的放大效应。 我们使用一种来自衰减真空宇宙学的一致哈勃参数，该宇宙学从接近de Sitter暴胀平稳演化到辐射主导。 我们找到了超视界扰动（标量和张量）以及真空和辐射主导时期的亚视界扰动的确切解。 超视界标量扰动的标准守恒量在增长模式下完全恒定，在衰减模式下则为零。 显示英文摘要

摘要： Toy models for the Hubble rate or the scalar field potential have been used to analyze the amplification of scalar perturbations through a smooth transition from inflation to the radiation era. We use a Hubble rate that arises consistently from a decaying vacuum cosmology, which evolves smoothly from nearly de Sitter inflation to radiation domination. We find exact solutions for super-horizon perturbations (scalar and tensor), and for sub-horizon perturbations in the vacuum- and radiation-dominated eras. The standard conserved quantity for super-horizon scalar perturbations is exactly constant for growing modes, and zero for the decaying modes.