  We consider quantum quench in large-N singlet sector quantum mechanics of a
single hermitian matrix in the double scaling limit. The time dependent
parameter is the self-coupling of the matrix. We find exact classical solutions
of the collective field theory of eigenvalue density with abrupt smooth quench
profiles which asymptote to constant couplings at early and late times, and the
system is initially in its ground state. With adiabatic initial conditions we
find that adiabaticity is always broken regardless of the quench speed. In a
class of quench profiles the saddle point solution for the collective field
diverges at a finite time, and a further time evolution becomes ambiguous.
However the underlying matrix model expressed in terms of fermions predict a
smooth time evolution across this point. By studying fluctuations around the
saddle point solution we interpret the emergent space-times. They generically
have spacelike boundaries where the couplings of the fluctuations diverge. Only
for very finely tuned quench profiles, the space-time is normal.
