Efficient simulation of inhomogeneously correlated systems using block interaction product states
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910721627914240 |
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| author | Cheng, Yifan Xie, Zhaoxuan Xie, Xiaoyu Ma, Haibo |
| author_facet | Cheng, Yifan Xie, Zhaoxuan Xie, Xiaoyu Ma, Haibo |
| contents | The strength of DMRG lies in its treatment of identical sites that are energetically degenerate and spatially similar. However, this becomes a drawback when applied to quantum chemistry calculations for large systems, as entangled orbitals often span broad ranges in energy and space, with notably inhomogeneous interactions. In this study, we propose addressing strong intra-fragment and weak inter-fragment correlations separately using a multi-configurational block interaction product state (BIPS) framework. The strong correlation is captured in electronic states on fragments, considering entanglement between fragments and their environments. This method has been tested in various chemical systems and shows high accuracy and efficiency in addressing inhomogeneous effects in quantum chemistry. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_07965 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Efficient simulation of inhomogeneously correlated systems using block interaction product states Cheng, Yifan Xie, Zhaoxuan Xie, Xiaoyu Ma, Haibo Quantum Physics The strength of DMRG lies in its treatment of identical sites that are energetically degenerate and spatially similar. However, this becomes a drawback when applied to quantum chemistry calculations for large systems, as entangled orbitals often span broad ranges in energy and space, with notably inhomogeneous interactions. In this study, we propose addressing strong intra-fragment and weak inter-fragment correlations separately using a multi-configurational block interaction product state (BIPS) framework. The strong correlation is captured in electronic states on fragments, considering entanglement between fragments and their environments. This method has been tested in various chemical systems and shows high accuracy and efficiency in addressing inhomogeneous effects in quantum chemistry. |
| title | Efficient simulation of inhomogeneously correlated systems using block interaction product states |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.07965 |