  The Kibble-Zurek (KZ) mechanism describes the generations of topological
defects when a system undergoes a second-order phase transition via quenches.
We study the holographic KZ scaling using holographic superconductors. The
scaling can be understood analytically from a scaling analysis of the bulk
action. The argument is reminiscent of the scaling analysis of the mean-field
theory but is more subtle and is not entirely obvious. This is because the
scaling is not the one of the original bulk theory but is an emergent one that
appears only at the critical point. The analysis is also useful to determine
the dynamic critical exponent $z$.
