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A Hylleraas functional based perturbative technique to relax the extremely localized molecular orbital wavefunction

机译:一种基于Hylleraas功能的微扰技术,可以放松分子轨道波的极端局限性

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摘要

A way to reduce the computational cost associated with the study of large molecules exploits the transfer of extremely localized molecular orbitals (ELMOs). Unfortunately, due to the reduction in the number of variational parameters, the ELMO description is not as accurate as the Hartree-Fock one, although it is qualitatively correct in most of the cases. Therefore, in order to overcome this significant drawback, we propose a perturbative ELMO approach exploiting the Hylleraas functional. Preliminary tests have been performed and the results are promising for future applications to large systems. (C) 2008 American Institute of Physics.
机译:减少与大分子研究相关的计算成本的方法是利用极局限性分子轨道(ELMO)的转移。不幸的是,由于变分参数数量的减少,尽管在大多数情况下在质量上是正确的,但ELMO描述并不像Hartree-Fock那样准确。因此,为了克服这个重大缺陷,我们提出了一种利用Hylleraas功能的摄动ELMO方法。已经进行了初步测试,结果对于将来应用于大型系统很有希望。 (C)2008美国物理研究所。

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