• CutTools

  • Referenced in 102 articles [sw07230]
  • reduction method to compute one-loop amplitudes. We present a program that implements ... scalar integrals from a user defined (sub)-amplitude or Feynman Diagram, as well...
  • BlackHat

  • Referenced in 73 articles [sw10450]
  • shell methods for one-loop amplitudes. We present the first results from BlackHat, an automated ... program for calculating one-loop amplitudes. The program implements the unitarity method and on-shell ... recursion to construct amplitudes. As input to the calculation, it uses compact analytic formulæ ... tree amplitudes for four-dimensional helicity states. The program performs all related computations numerically...
  • FeynArts

  • Referenced in 115 articles [sw06474]
  • generation and visualization of Feynman diagrams and amplitudes. It started...
  • FeynCalc

  • Referenced in 69 articles [sw07022]
  • Feyn Calc - Computer-algebraic calculation of Feynman amplitudes. We present the computer program Feyn Calc ... automatic algebraic calculation of Feynman amplitudes. The purpose of the package is to facilitate...
  • SAMURAI

  • Referenced in 28 articles [sw09145]
  • Scattering amplitudes from unitarity-based reduction algorithm at the integrand-level. SAMURAI is a tool ... loop corrections to any scattering amplitudes within the dimensional-regularization scheme. It is based ... diagrams or as product of tree-level amplitudes. We discuss some applications, among which...
  • PHEGAS

  • Referenced in 31 articles [sw02242]
  • algorithm, capable to efficiently integrate the squared amplitude of any scattering process, is presented ... program, PHEGAS, which, using HELAC, a helicity amplitude computational package, can be used for automatic...
  • two loop amplitudes

  • Referenced in 25 articles [sw25063]
  • Local integrand representations of all two-loop amplitudes in planar SYM. We use generalized unitarity ... invariant formulae for all two-loop scattering amplitudes in planar, maximally supersymmetric Yang-Mills theory...
  • HELAC

  • Referenced in 29 articles [sw09543]
  • HELAC: A package to compute electroweak helicity amplitudes. HELAC is a FORTRAN based package that ... able to compute efficiently helicity amplitudes for arbitrary scattering processes within the standard electroweak theory...
  • GoSam

  • Referenced in 27 articles [sw07310]
  • automated calculation of one-loop amplitudes for multi-particle processes in renormalizable quantum field theories ... amplitudes, which are generated in terms of Feynman diagrams, can be reduced using either...
  • positroids

  • Referenced in 26 articles [sw25868]
  • Positroids, Plabic Graphs, and Scattering Amplitudes in Mathematica. The many intricate connections between scattering amplitudes...
  • MadEvent

  • Referenced in 31 articles [sw07194]
  • relevant subprocesses, generates both the amplitudes and the mappings needed for an efficient integration over...
  • ECHO

  • Referenced in 29 articles [sw22269]
  • novel test on the propagation of large amplitude circularly polarized Alfven waves. In particular...
  • fdasrvf

  • Referenced in 27 articles [sw19668]
  • analysis of functional data through phase and amplitude separation...
  • NGluon

  • Referenced in 18 articles [sw06832]
  • package to calculate one-loop multi-gluon amplitudes. We present a computer library ... numerical evaluation of colour-ordered n-gluon amplitudes at one-loop order in pure Yang...
  • Golem95

  • Referenced in 25 articles [sw00371]
  • next-to-leading order corrections to scattering amplitudes in elementary particle physics. Solution method: Tensor...
  • HELAS

  • Referenced in 12 articles [sw09542]
  • HELAS: HELicity amplitude subroutines for Feynman diagram evaluations. HELAS is a set of the FORTRAN ... subroutines which enable to compute the helicity amplitude of an arbitrary tree level Feynman diagram ... FORTRAN program to calculate the helicity amplitude of a given process by calling the HELAS ... subroutines. The example of evaluating the helicity amplitude of the process W+W-→t anti...
  • PSS

  • Referenced in 22 articles [sw12095]
  • obtaining superstring effective actions from the scattering amplitudes computed with the pure spinor formalism...
  • HELAC-1LOOP

  • Referenced in 22 articles [sw24722]
  • numerically evaluating QCD virtual corrections to scattering amplitudes. A detailed presentation of the algorithm...
  • O'Mega

  • Referenced in 15 articles [sw07195]
  • Mega, a new optimizing compiler for tree amplitudes in quantum field theory, and briefly describe ... most efficient code currently available for scattering amplitudes for many polarized particles in the Standard...
  • BASES/SPRING

  • Referenced in 20 articles [sw14794]
  • numerical evaluation of interference effects among various amplitudes. Besides these changes, its program structure...