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An explicit expression of generating function for one-loop tensor reduction
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DOI：10.1007/JHEP02(2024)158.png)
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Abstract
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This work introduces an explicit expression for the generating function for the reduction of an n-gon to an (n - k)-gon. A novel recursive relation of generating function is formulated based on Feynman Parametrization in projective space, involving a single ordinary differential equation. The explicit formulation of generating functions provides crucial insights into the complex analytic structure inherent in loop amplitudes.
Keywords:
Higher-Order Perturbative Calculations
Field Theories in Higher Dimensions
Scattering Amplitudes
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5.5
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4.0W
Citations:
13.7W
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