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Article Dans Une Revue Computer Physics Communications Année : 2021

Caravel: A C++ framework for the computation of multi-loop amplitudes with numerical unitarity

S. Abreu
  • Fonction : Auteur
J. Dormans
  • Fonction : Auteur
F. Febres Cordero
  • Fonction : Auteur
H. Ita
  • Fonction : Auteur
M. Kraus
  • Fonction : Auteur
E. Pascual
  • Fonction : Auteur
M.S. Ruf
  • Fonction : Auteur
V. Sotnikov
  • Fonction : Auteur

Résumé

We present the first public version of Caravel, a C++17 framework for the computation of multi-loop scattering amplitudes in quantum field theory, based on the numerical unitarity method. Caravel is composed of modules for the D-dimensional decomposition of integrands of scattering amplitudes into master and surface terms, the computation of tree-level amplitudes in floating point or finite-field arithmetic, the numerical computation of one- and two-loop amplitudes in QCD and Einstein gravity, and functional reconstruction tools. We provide programs that showcase Caravel’s main functionalities and allow to compute selected one- and two-loop amplitudes.

Dates et versions

hal-03143637 , version 1 (16-02-2021)

Identifiants

Citer

S. Abreu, J. Dormans, F. Febres Cordero, H. Ita, M. Kraus, et al.. Caravel: A C++ framework for the computation of multi-loop amplitudes with numerical unitarity. Computer Physics Communications, 2021, 267, pp.108069. ⟨10.1016/j.cpc.2021.108069⟩. ⟨hal-03143637⟩
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