Diffeomorphisms of scalar quantum fields via generating functions
نویسندگان
چکیده
We study the application of formal diffeomorphisms to scalar fields. give a new proof that interacting tree amplitudes vanish in resulting theories. Our is directly at diagrammatic level, not appealing path integral, and proceeds via generating function analysis, so it more insightful than previous proofs. Along way, we combinatorial proofs some Bell polynomial identities, comment on connection with Legendre transform.
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ژورنال
عنوان ژورنال: Annales de l’Institut Henri Poincaré D
سال: 2023
ISSN: ['2308-5827', '2308-5835']
DOI: https://doi.org/10.4171/aihpd/161