Crunchy

Crunchy is a generic Rust library for lattice gauge theory and related lattice-model computations.

It currently provides:

• Generic periodic cubical lattices in arbitrary dimensions
• Fields on vertices, edges, faces, and cubes
• Connectivity between lattice cells
• N-dimensional array and indexing utilities
• Reusable simulation types and Metropolis updates

Getting started

This project currently uses unstable Rust features, so a nightly toolchain is required.

cargo +nightly test

Run the included 2D Ising model example with:

cargo +nightly run --example ising_model --release

To define a model, implement Field/UpdateField for its degrees of freedom and CubicalFields for its lattice field content. See examples/ising_model.rs for a complete example.

Status

Crunchy is experimental and under active development; APIs may change.