Caravel: A C++ Framework for the Computation of Multi-Loop Amplitudes with Numerical Unitarity
High Energy Physics - Phenomenology
2021-07-28 v1 High Energy Physics - Theory
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 -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.
Keywords
Cite
@article{arxiv.2009.11957,
title = {Caravel: A C++ Framework for the Computation of Multi-Loop Amplitudes with Numerical Unitarity},
author = {S. Abreu and J. Dormans and F. Febres Cordero and H. Ita and M. Kraus and B. Page and E. Pascual and M. S. Ruf and V. Sotnikov},
journal= {arXiv preprint arXiv:2009.11957},
year = {2021}
}