  We study the quench and the ramp dynamics of interacting $N$-component
charged bosons with dipole symmetry using Schwinger-Keldysh field theory in the
large $N$ limit. The equilibrium phase diagram of these bosons shows two phases
in the large $N$ limit. The first is a normal phase where both the global
$U(N)$ and the dipole symmetries are conserved and the second is a delocalized
condensed phase where both the symmetries are broken. In contrast, our explicit
computation of the steady state after an instantaneous quantum quench from the
condensed phase shows that an additional, novel, delocalized normal phase,
where the global $U(N)$ symmetry is conserved but the dipole symmetry is
broken, can exist for a range of quench parameters. A study of ramp dynamics of
the model shows that the above-mentioned steady state exists only above a
critical ramp rate which we estimate.
