  The form factor provides a convenient way to describe properties of
topological solitons in the full quantum theory, when semiclassical concepts
are not applicable. It is demonstrated that the form factor can be calculated
numerically using lattice Monte Carlo simulations. The approach is very general
and can be applied to essentially any type of soliton. The technique is
illustrated by calculating the kink form factor near the critical point in
1+1-dimensional scalar field theory. As expected from universality arguments,
the result agrees with the exactly calculable scaling form factor of the
two-dimensional Ising model.
