The quark vacuum

We conjecture on the structure of the quark vacuum from a viewpoint somewhat different from, but perhaps supplementary to, standard philosophies. Using a rather simple dynamical Hamiltonian model, vacuum excitations carrying helicities 0 and +/-1 are discussed in connection with the dynamical stability of solutions. We speculate on how the rest masses of the light mesons pi^0, eta^0 and eta'^0 could be related to these excitations.