Effect of peculiar velocities of inhomogeneities on the shape of
  gravitational potential in spatially curved universe
  We investigate the effect of peculiar velocities of inhomogeneities and the
spatial curvature of the universe on the shape of the gravitational potential.
To this end, we consider scalar perturbations of the FLRW metric. The
gravitational potential satisfies a Helmholtz-type equation which follows from
the system of linearized Einstein equations. We obtain analytical solutions of
this equation in the cases of open and closed universes, filled with cold dark
matter in presence of the cosmological constant. We demonstrate that, first,
peculiar velocities significantly affect the screening length of the
gravitational interaction and, second, the form of the gravitational potential
depends on the sign of the spatial curvature.
