  Consider two free Hamiltonians for the same scalar field with two different
masses. Wefind a squeeze operator which maps the ground state of one to the
other. The operatoris described in both the Dirac and also the Schrodinger
wavefunctional formalismsfor quantum field theory. We conjecture that this
construction can be generalized toobtain operators which map between distinct
topological sectors in the same theory.
