  In a recently proposed model of ``ghost condensation'', spatially homogeneous
states may mix, via tunneling, with inhomogeneous states which are somewhat
similar to bubbles in the theory of false vacuum decay, the corresponding
bubble nucleation rate being exponentially sensitive to the ultraviolet
completion of the model. The conservation of energy and charge requires that
the energy density is negative and the field is strongly unstable in a part of
the nucleated bubble. Unlike in the theory of false vacuum decay, this region
does not expand during subsequent real-time evolution. In the outer part,
positive energy outgoing waves develop, which eventually form shocks. Behind
the outgoing waves and away from the bubble center, the background settles down
to its original value. The outcome of the entire process is thus a microscopic
region of negative energy and strong field -- ``hole in the ghost condensate''
-- plus a collection of outgoing waves (particles of the ghost condensate
field) carrying away finite energy.
