wiki:Density

Version 6 (modified by Durupt, 5 days ago) ( diff )

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# Documentation for the density mode of MadGraph Work In Progress

Density mode

Authors

  1. Durupt

Short description

Automatic computation of density matrices and quantum information observables. This page contains the technical description of the Python library Density_functions.py used for analysis.

How to compute density matrices

This module of MadGraph5 allows to compute density matrices automatically in a user-friendly way. After having generated your process 

generate YOUR_PROCESS
output
launch

you will be able to chose the type of run. To compute density matrices one must chose 

reweight = density

The user is then asked to edit the different cards needed for the run. The information for the density matrices computation is given in the reweight_card. Examples for different benchmark processes are given in ​https://arxiv.org/abs/2510.17730.

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