QUANTUM INFERENCE METHODS AND HYPERVIRIAL THEOREMS

Arguments of the Jaynes maximum entropy sort have proved to be surpris ingly successful in providing one with approximate descriptions of pur e states in a variety of scenarios, entirely bypassing any considerati on of Schrodinger's equation. Thus far, however, the algorithm has bee n unable to incorporate input information concerning expectation value s of complementary observables. We discuss here how to overcome this d ifficulty by recourse to diagonal hypervirial theorems.