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首页> 外文期刊>International Journal of Quantum Chemistry >Automated derivation and parallel computer implementation of renormalized and active-space coupled-cluster methods
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Automated derivation and parallel computer implementation of renormalized and active-space coupled-cluster methods

机译:重归一化和活动空间耦合聚类方法的自动推导和并行计算机实现

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摘要

Our recent efforts that have led to an automated derivation and computer implementation of the renormalized and active-space coupled-cluster (CC) methods with Tensor Contraction Engine (TCE) are summarized. The TCE-generated renormalized and active-space CC computer codes are parallel and applicable to closed and open-shell references, enabling accurate calculations of potential energy surfaces along bond-breaking coordinates and excited states displaying a significant multireference character. The effectiveness of the new codes in describing electronic quasi-degeneracies is illustrated by the renormalized CC calculations of the potential energy curve of HCl and the active-space CC calculations for the low-lying excited states of the Be-3 system. (c) 2005 Wiley Periodicals, Inc.
机译:总结了我们最近的工作,这些工作已导致使用Tensor压缩引擎(TCE)自动进行重新标准化和活动空间耦合集群(CC)方法的派生和计算机实现。 TCE生成的重新规范化和活动空间CC计算机代码是并行的,适用于封闭和开放式参考,从而能够精确计算沿键断裂坐标和激发态的势能面,并显示出显着的多参考特征。通过重新规范化HCl势能曲线的CC计算以及Be-3系统低激发态的有效空间CC计算,可以说明新代码在描述电子准简并性方面的有效性。 (c)2005年Wiley Periodicals,Inc.

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