Public research software

Open tools for precision collider physics.

The αLoop collaboration develops theoretical and algorithmic methods for automated cross-section calculations in quantum field theory, centred on Local Unitarity.

Choose a task Start with GammaLoop

Local cancellation.
Global precision.

Choose by task · 01—05

What do you want to work on?

Start with the scientific object or operation you have in hand. Each route opens the maintained first workflow for the component that owns it.

Research software · 01—05

Projects & crates

Five connected codebases spanning numerical cross-sections, graph algorithms, tensor networks, symbolic identities, and integral evaluation.

01Calculation application

GammaLoop

Differential cross-sections with Local Unitarity

Crates & modules gammaloopgammaloop-apigammalooprs

02Graph-algorithm library

Linnet

Half-edge graphs and subgraph-first algorithms

Crates & modules linnetlinnet-py

03Tensor-network library

Spenso

Typed tensors, symbolic structures, and executable tensor networks

Crates & modules spensospenso-hep-libspenso-macrosspynso3

04Symbolic-identity library

Idenso

Symbolic tensor identities for Spenso and Symbolica

Crates & modules idenso

05Integral-evaluation library

Vakint

Single-scale vacuum-integral matching and evaluation

Crates & modules vakint

Guided tour

See GammaLoop run

An animated walk through the command line, process generation, Monte Carlo integration, the Rust and Python APIs, and the crates behind them, drawn live in the browser. The commands are real; the terminal output is illustrative.

Music: Hard Boiled by Kevin MacLeod (incompetech.com), licensed under Creative Commons Attribution 4.0.