Cosmological Poisson equation
= Cosmological Poisson equation
On subhorizon scales, the Newtonian potential sourced by the matter density contrast obeys
$$
\nabla^2\phi=\frac32\mathcal H^2\Omega_m\delta.
$$
= Cosmological Poisson equation
On subhorizon scales, the Newtonian potential sourced by the matter density contrast obeys
$$
\nabla^2\phi=\frac32\mathcal H^2\Omega_m\delta.
$$