(2021) Canay, Ezgi; Ruslan, Brilenkov; Eingorn, Maxim; Arapo˘glu, A. Savas; Zhuk, Oleksandr I.; Жук, Олександр Іванович; Жук, Александр Иванович
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.