论文标题
原始重力波和曲率扰动引起的能量密度扰动
Primordial gravitational waves and curvature perturbations induced energy density perturbation
论文作者
论文摘要
我们研究由辐射主导的时代的高斯曲率扰动和原始重力波产生的二阶标量和密度扰动。介绍了所有可能的二阶源项后，我们获得了内核函数的显式表达式和二阶标量扰动的功率谱。它表明原始引力波可能会显着影响二阶能量密度扰动。根据不同种类的原始功率光谱，研究了原始引力波的影响。
We study the second order scalar and density perturbations generated by the Gaussian curvature perturbations and primordial gravitational waves in the radiation-dominated era. After presenting all the possible second-order source terms, we obtain the explicit expressions of the kernel functions and the power spectra of the second order scalar perturbations. It shows that the primordial gravitational waves might affect the second order energy density perturbation significantly. The effects of the primordial gravitational waves are studied in terms of different kinds of primordial power spectra.
