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arXiv · 2204.06361

Interface to high-performance periodic coupled-cluster theory calculations with atom-centered, localized basis functions

Evgeny Moerman·Felix Hummel·Andreas Grüneis·Andreas Irmler·Matthias Scheffler
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Abstract

Coupled cluster (CC) theory is often considered the gold standard of quantum-chemistry. For solids, however, the available software is scarce. We present CC-aims, which can interface ab initio codes with localized atomic orbitals and the CC for solids (CC4S) code by the group of A. Gr\"uneis. CC4S features a continuously growing selection of wave function-based methods including perturbation and CC theory. The CC-aims interface was developed for the FHI-aims code (https://fhi-aims.org) but is implemented such that other codes may use it as a starting point for corresponding interfaces. As CC4S offers treatment of both molecular and periodic systems, the CC-aims interface is a valuable tool, where DFT is either too inaccurate or too unreliable, in theoretical chemistry and materials science alike.

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Evgeny Moerman, Felix Hummel, Andreas Grüneis, Andreas Irmler, Matthias Scheffler. 2022-04-13. Interface to high-performance periodic coupled-cluster theory calculations with atom-centered, localized basis functions. https://arxiv.org/abs/2204.06361

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