The role of the Hamiltonian in the interpretation of quantum mechanics

MARIO CASTAGNINO; OLIMPIA LOMBARDI

Valladolid

Congreso; 5th International Symposium on Quantum Theory and Symmetries QTS5; 2007

Institute of Physics, U.S.A, y Universidad de Valladolid

We propose a new realist, non-collapse interpretation of quantum mechanics, which moves away from the prevailing trend in the subject by paying special attention to the physical relevance of the interpretation. In particular, our proposal endows the Hamiltonian of the system, systematically ignored in the traditional interpretations, with a central role: the Hamiltonian distinguishes between systems and subsystems and is the main ingredient in the selection of the definite-valued observables. We show how this interpretation solves the measurement problem, both in the ideal and in the non-ideal versions, and we argue for the physical relevance of the rule that selects the definite-valued observables of the system.