Lagrangian theory for cosmic structure formation with vorticity: Newtonian and post-Friedmann approximations

Understand

We study the nonlinear gravitational dynamics of a universe filled with a pressureless fluid and a cosmological constant $\Lambda$ in the context of Newtonian gravity, and in the relativistic post-Friedmann approach proposed in paper I [I.

• Milillo et al., Phys.
• Rev.
• D 92, 023519 (2015).].