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Welcome to the ALPS Software Package

ALPS (Algorithms and Libraries for Physics Simulations) is an open-source package for numerical simulations of quantum and classical condensed matter systems. It provides production-ready implementations of leading quantum algorithms for spin, bosonic, and fermionic lattice models. A Python interface and standardized file formats make it straightforward to set up simulations, run them on a laptop or HPC cluster, and analyse the results.

Since its inception, ALPS has been used by hundreds of researchers across at least 52 countries, has underpinned thousands of publications, and has been applied to more than 20 research disciplines.

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Tutorials

casino Monte Carlo Simulations calculate Exact Diagonalization compress Density Matrix Renormalization Group hub Dynamical Mean Field Theory update Time-Evolving Block Decimation grid_view Custom Lattices and Models

Acknowledgement

The ALPS software package has been developed over more than 20 years by researchers from around the world. After long being funded by ETH Zurich and the Simons Foundation, current sponsorship comes from the NSF POSE program.

NSF
Supported by the US National Science Foundation under awards NSF #2550169 and NSF #2345575.