SciPost logo

SciPost Submission Page

Geometry and causality for efficient multiloop representations

by German F. R. Sborlini

Submission summary

As Contributors: German Sborlini
Arxiv Link: https://arxiv.org/abs/2109.07808v1 (pdf)
Date submitted: 2021-09-17 11:21
Submitted by: Sborlini, German
Submitted to: SciPost Physics Proceedings
Proceedings issue: RADCOR 2021 (15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology)
Academic field: Physics
Specialties:
  • High-Energy Physics - Theory
  • High-Energy Physics - Phenomenology
Approach: Theoretical

Abstract

Multi-loop scattering amplitudes constitute a serious bottleneck in current high-energy physics computations. Obtaining new integrand level representations with smooth behaviour is crucial for solving this issue, and surpassing the precision frontier. In this talk, we describe a new technology to rewrite multi-loop Feynman integrands in such a way that non-physical singularities are avoided. The method is inspired by the Loop-Tree Duality (LTD) theorem, and uses geometrical concepts to derive the causal structure of any multi-loop multi-leg scattering amplitude. This representation makes the integrand much more stable, allowing faster numerical simulations, and opens the path for novel re-interpretations of higher-order corrections in QFT.

Current status:
Editor-in-charge assigned


Submission & Refereeing History

You are currently on this page

Submission 2109.07808v1 on 17 September 2021

Reports on this Submission

Anonymous Report 1 on 2021-11-27 (Invited Report)

Strengths

The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings.

Weaknesses

None.

Report

The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings and therefore we recommend its publication.

  • validity: high
  • significance: high
  • originality: good
  • clarity: high
  • formatting: excellent
  • grammar: excellent

Login to report


Comments

German Sborlini  on 2021-11-27  [id 1982]

We thank the referee for the positive report.