  We consider the symmetric and broken phases of light-front $\phi^4$ theory in
two dimensions. In both cases the mass of the lowest state is computed and its
dependence on the coupling used to infer critical coupling values. The
structure of the eigenstate is examined to determine whether it shows the signs
of critical behavior, specifically whether the one-body sector becomes
improbable relative to the higher Fock sectors. In attempts to establish this
behavior, we consider both sector-independent and sector-dependent constituent
masses.
