Collier: A fortran-based complex one-loop library in extended regularizations

@article{Denner2017CollierAF,
  title={Collier: A fortran-based complex one-loop library in extended regularizations},
  author={A. Denner and S. Dittmaier and L. Hofer},
  journal={Comput. Phys. Commun.},
  year={2017},
  volume={212},
  pages={220-238}
}
Abstract We present the library Collier  for the numerical evaluation of one-loop scalar and tensor integrals in perturbative relativistic quantum field theories. The code provides numerical results for arbitrary tensor and scalar integrals for scattering processes in general quantum field theories. For tensor integrals either the coefficients in a covariant decomposition or the tensor components themselves are provided. Collier  supports complex masses, which are needed in calculations… Expand
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