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Abstract: We suggest a new approach for the automatic and fully numerical evaluation ofone-loop scattering amplitudes in perturbative quantum field theory. We usesuitably formulated dispersion relations to perform the calculation as aconvolution of tree-level amplitudes. This allows to take advantage of theiterative numerical algorithms for the evaluation of leading order matrixelements.



Autor: M. Moretti, F. Piccinini, A.D. Polosa

Fuente: https://arxiv.org/







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