Large-scale peculiar velocity fields: Newtonian vs relativistic treatment

We employ a perturbative analysis to study the evolution of large-scale peculiar velocity fields within framework Newtonian gravity and then compare our results those corresponding relativistic treatment. In so doing, we use same mathematical formalism apply physical approach. This facilitates direct transparent comparison between two treatments. Our recovers extends familiar on one hand, while other it shows that leads substantially weaker growth-rates for field, compared implies that, by using Newton's rather than Einstein's theory, could seriously underestimate overall kinematic cosmological motions. are also in position identify reason theories arrive at such considerably different conclusions.