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Numerically exact Green's functions for lattice polaron models, easily and efficiently

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The Generalized Green's function Cluster Expansion

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Numerically exact Green's functions for lattice polaron models, easily and efficiently

If you use this work, please cite us!
GGCE Software (JOSS) | Original Paper (PRB) | Bond-Peierls Paper (PRB)

💾 Installation

Just use pip!

conda create -n py3.9-ggce python=3.9 -y
conda activate py3.9-ggce
pip install ggce

We provide detailed information on advanced installation at our documentation.

🚀 Quickstart

Get started in a few lines of code right here!

Or, checkout our intro tutorial: Open In Colab

⚠️ Known issues

Currently, PETSc is not building properly (we believe this is a problem with the petsc4py wheel or something like this). If you would like to help contribute to this bugfix, please see this PR!

🙏 Acknowledgements

This software is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research, Department of Energy Computational Science Graduate Fellowship under Award Number DE-FG02-97ER25308. This work also used theory and computational resources of the Center for Functional Nanomaterials, which is a U.S. Department of Energy Office of Science User Facility, and the Scientific Data and Computing Center, a component of the Computational Science Initiative, at Brookhaven National Laboratory under Contract No. DE-SC0012704. We also acknowledge support from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Stewart Blusson Quantum Matter Institute (SBQMI).