  We perform a numerical simulation of the classical evolution of the
plane-wave matrix model with semiclassical initial conditions. Some of these
initial conditions thermalize and are dual to a black hole forming from the
collision of D-branes in the plane wave geometry. In particular, we consider a
large fuzzy sphere (a D2-brane) plus a single eigenvalue (a D0-particle) going
exactly through the center of the fuzzy sphere and aimed to intersect it.
Including quantum fluctuations of the off-diagonal modes in the initial
conditions, with sufficient kinetic energy the configuration collapses to a
small size. We also find evidence for fast thermalization: rapidly decaying
autocorrelation functions at late times with respect to the natural time scale
of the system.
