论文标题
标量和矢量扰动在具有非线性完美流体的宇宙中
Scalar and vector perturbations in a universe with nonlinear perfect fluid
论文作者
论文摘要
我们研究了一个三组分的宇宙，这些宇宙充满了灰尘状的物质，以离散的不均匀性（例如星系）和以状态线性和非线性方程为特征的完美流体的形式。在宇宙筛选方法中，我们发展了标量和向量扰动的理论。与不同成分相关的能量密度都没有被视为小。因此，派生的方程在子和超级马量表上都是有效的，并为各种宇宙学模型启用了模拟。
We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear equations of state. Within the cosmic screening approach, we develop the theory of scalar and vector perturbations. None of the energy density contrasts associated with the distinct components is treated as small. Consequently, the derived equations are valid at both sub- and super-horizon scales and enable simulations for a variety of cosmological models.
