αLoop Local Unitarity research

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.

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Local cancellation.
Global precision.

Choose by task · 01—05

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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