Abstract

It is proposed that quantum mechanical systems may spontaneously develop collective modes and other cooperative behavior which lead to a rich structuring of their Hilbert spaces and the consequent appearance ofobjective parameters for their description, in addition to the more familiar wave function description. The paper discusses the time evolution of these objective parameters, both the terms of non-unitary operators and through the dynamical effects of the quantum system's environment. A brief exploration is also made of the way in which the objective parameters corresponding to two quantum systems can “measure” and interact with each other. The significance of a non-unitary time evolution for the origin of the universe is also discussed