Operator product expansions as a consequence of phase space properties

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142876The paper presents a model-independent, nonperturbative proof of operator product expansions in quantum field theory. As an input, a recently proposed phase space condition is used that allows a precise description of point field structures. Based on the product expansions, we also define and analyze normal products (in the sense of Zimmermann).v3: minor wording changes, as to appear in J. Math. Phys.; 12 pagesMathematical Physics81T05Operator product expansions as a consequence of phase space propertiestext