Caravel: A C++ framework for the computation of multi-loop amplitudes with numerical unitarity
(2021) Computer Physics Communications — Vol. 267 (2021)
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- Authors
Souto Gonçalves de abreu, Samuel 
Dormans, J. Febres Cordero, F. Sotnikov, V.
- Abstract
- 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.
- Affiliations
Citations
Souto Gonçalves de abreu, S., Dormans, J., Febres Cordero, F., Ita, H., Kraus, M., Page, B., Pascual, E., Ruf, M. S., & Sotnikov, V. (2021). Caravel: A C++ framework for the computation of multi-loop amplitudes with numerical unitarity. Computer Physics Communications, 267. https://doi.org/10.1016/j.cpc.2021.108069 (Original work published 2021)