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首页> 外文期刊>The Journal of Chemical Physics >Converging many-body correlation energies by means of sequence extrapolation
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Converging many-body correlation energies by means of sequence extrapolation

机译:通过序列推断会聚多个身体相关能量

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摘要

We present an extrapolation scheme for the correlation energy in many-body theory that requires only a relatively small fraction of the orbitals spanning the virtual space but recovers nearly the whole dynamic correlation energy, independently of the single-or multi-reference nature of the problem. Applications to both ground-state chemistry and photochemistry are discussed that clearly show how such an extrapolation scheme can be used to overcome the scaling walls in ab initio quantum chemistry arising from the sheer number of molecular orbitals needed for very accurate calculations. Published by AIP Publishing.
机译:我们在许多身体理论中提出了一种用于相关能量的外推方案,其仅需要跨越虚拟空间的相对较少的轨道分数,而是几乎完整的动态相关能量,独立于问题的单或多参考性质 。 讨论了对地面化学和光化学的应用,清楚地表明,这种外推方案如何用于克服从非常精确计算所需的纯粹分子轨道数量的AB初始量子化学中的缩放壁。 通过AIP发布发布。

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