Ab Initio Many Body Quantum Embedding and Local Correlation in Crystalline Materials using Interpolative Separable Density Fitting
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866917219355590656 |
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| author | Yang, Junjie Zhang, Ning Yuan, Shunyue Yu, Jincheng Ye, Hong-Zhou Chan, Garnet |
| author_facet | Yang, Junjie Zhang, Ning Yuan, Shunyue Yu, Jincheng Ye, Hong-Zhou Chan, Garnet |
| contents | We present an efficient implementation of ab initio many-body quantum embedding and local correlation methods for infinite periodic systems through translational symmetry adapted interpolative separable density fitting, an approach which reduces the scaling of the calculations to only linear with the number of k-points. Employing this methodology, we compute correlated ground-state coupled cluster energies within density matrix embedding and local natural orbital correlation frameworks for both weakly and strongly correlated solids, using up to 1000 k-points. By extrapolating the local correlation domains and k-point sampling we further obtain estimates of the full coupled cluster with singles, doubles, and perturbative triples ground-state energies in the thermodynamic limit. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_16379 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Ab Initio Many Body Quantum Embedding and Local Correlation in Crystalline Materials using Interpolative Separable Density Fitting Yang, Junjie Zhang, Ning Yuan, Shunyue Yu, Jincheng Ye, Hong-Zhou Chan, Garnet Strongly Correlated Electrons Materials Science Chemical Physics We present an efficient implementation of ab initio many-body quantum embedding and local correlation methods for infinite periodic systems through translational symmetry adapted interpolative separable density fitting, an approach which reduces the scaling of the calculations to only linear with the number of k-points. Employing this methodology, we compute correlated ground-state coupled cluster energies within density matrix embedding and local natural orbital correlation frameworks for both weakly and strongly correlated solids, using up to 1000 k-points. By extrapolating the local correlation domains and k-point sampling we further obtain estimates of the full coupled cluster with singles, doubles, and perturbative triples ground-state energies in the thermodynamic limit. |
| title | Ab Initio Many Body Quantum Embedding and Local Correlation in Crystalline Materials using Interpolative Separable Density Fitting |
| topic | Strongly Correlated Electrons Materials Science Chemical Physics |
| url | https://arxiv.org/abs/2601.16379 |