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Direct numerical evaluation of multi-loop integrals without contour deformation
We propose a method for computing numerically integrals defined via $i \epsilon $ deformations acting on single-pole singularities. We achieve this without an explicit analytic contour deformation. Our solution is then used to produce precise Monte Carlo estimates of multi-scale multi-loop integrals...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-022-10008-6 http://cds.cern.ch/record/2788807 |