The TRIQS Sum-Of-Exponentials bold HYBridization expansion impurity solver (triqs_soehyb)

triqs_soehyb 0.0.1

This is the homepage of triqs_soehyb 0.0.1. For changes see the changelog page.

The TRIQS Sum-Of-Exponentials bold HYBridization expansion impurity solver (triqs_soehyb) can solve generic multiband Anderson impurity problems approximately by perturbative expansion in the coupling to the environment (a.k.a. the hybridization function \(\Delta(\tau)\)).

This implementation is leveraging the sum-of-exponentials (SOE) trick to acheive parametrically better computational complexity compared to direct integration and uses the Discrete Lehmann Representation (DLR) for representing response functions.

Learn how to use triqs_soehyb in the Documentation.

Citation

We kindly ask you to cite the following method papers when using triqs_soehyb in your work

[1]

J. Kaye, Z. Huang, H. U.R. Strand, D. Golež, Phys. Rev. X 14, 031034 (2024)

[2]

Z. Huang, D. Golež, H. U.R. Strand, J. Kaye, arXiv:2503.19727 (2025)

[3]

J. Kaye, H. U.R. Strand, N. Wentzell, J. Open Source Softw., 9(100), 6297, (2024)

[4]

J. Kaye, K. Chen, O. Parcollet, Phys. Rev. B 105, 235115 (2021)

Note that this application uses the TRIQS library please also see its citation page.