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Operator product expansions as a consequence of phase space properties

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Publication details

JournalJournal of Mathematical Physics
DatePublished - 2005
Number of pages13
Pages (from-to)082304
Original languageEnglish


The 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).

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