Curvature and isocurvature perturbations in a three-fluid model of curvaton decay
Curvature and isocurvature perturbations in a three-fluid model of curvaton decay
复制标题
曲率衰减三流体模型中的曲率和等曲率扰动
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
D. Wands
中科院分区：
文献类型：
--
作者：
Sujata Gupta;Karim A. Malik;D. Wands
我们研究了曲率模型中宇宙学扰动在暴胀后的演化，其中非相对论曲率衰变为辐射和冷暗物质成分。我们计算的原始曲率和相关的等曲率扰动继承的辐射和冷暗物质后，曲率已经衰减。我们给出了初始曲率密度相对于曲率衰减率的传递系数。
We study the evolution of the cosmological perturbations after inflation in curvaton models where the non-relativistic curvaton decays into both radiation and a cold dark matter component. We calculate the primordial curvature and correlated isocurvature perturbations inherited by the radiation and cold dark matter after the curvaton has decayed. We give the transfer coefficient in terms of the initial curvaton density relative to the curvaton decay rate.