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- W4281657338 abstract "This paper discusses the locality and analyticity of the crossing symmetric dispersion relation (CSDR). Imposing locality constraints on the CSDR gives rise to a local and fully crossing symmetric expansion of scattering amplitudes, dubbed as Feynman block expansion. A general formula is provided for the contact terms that emerge from the expansion. The analyticity domain of the expansion is also derived analogously to the Lehmann-Martin ellipse. Our observation of type-II super-string tree amplitude suggests that the Feynman block expansion has a bigger analyticity domain and better convergence. The formula derived for the contact terms is directly applicable to CFT Mellin amplitudes." @default.
- W4281657338 created "2022-06-13" @default.
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- W4281657338 date "2022-05-27" @default.
- W4281657338 modified "2023-09-26" @default.
- W4281657338 title "Locality and Analyticity of the Crossing Symmetric Dispersion Relation" @default.
- W4281657338 hasPublicationYear "2022" @default.
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