Quark Contraction Tool -- QCT

Abstract

We present a Mathematica package for the calculation of Wick contractions in quantum field theories - QCT. Furthermore the package aims at automatically generating code for the calculation of physical matrix elements, suitable for numerical evaluation in a C++ program. To that end commonly used algebraic manipulations for the calculation of matrix elements in lattice QCD are implemented.

version accepted for publication in Computer Physics Communications

Cited by in corpus (9)

• Nucleon isovector charges and twist-2 matrix elements with $N_f=2+1$ dynamical Wilson quarks
• Isovector electromagnetic form factors of the nucleon from lattice QCD and the proton radius puzzle
• Rho resonance, timelike pion form factor, and implications for lattice studies of the hadronic vacuum polarisation
• Nucleon Sigma Terms with $N_f=2+1$ O($a$)-improved Wilson fermions
• Precision calculation of the electromagnetic radii of the proton and neutron from lattice QCD
• Electromagnetic form factors of the nucleon from $N_f=2+1$ lattice QCD
• Zemach and Friar radii of the proton and neutron from lattice QCD
• Nuclear correlation functions using first-principle calculations of lattice quantum chromodynamics
• The isoscalar octet axial form factor of the nucleon from lattice QCD