Janus J. Eriksen, Tyler A. Anderson, J. Emiliano Deustua, Khaldoon Ghanem, Diptarka Hait, Mark R. Hoffmann, Seunghoon Lee, Daniel S. Levine, Ilias Magoulas, Jun… 展开作者
Janus J. Eriksen, Tyler A. Anderson, J. Emiliano Deustua, Khaldoon Ghanem, Diptarka Hait, Mark R. Hoffmann, Seunghoon Lee, Daniel S. Levine, Ilias Magoulas, Jun Shen, Norman M. Tubman, K. Birgitta Whaley, Enhua Xu, Yuan Yao, Ning Zhang, Ali Alavi, Garnet Kin-Lic Chan, Martin Head-Gordon, Wenjian Liu, Piotr Piecuch, Sandeep Sharma, Seiichiro L. Ten-no, C. J. Umrigar, Jürgen Gauss
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29 pages, 1 figure, 2 tables. SI as an ancillary file
我们报告的调查结果的盲目挑战,致力于确定冻结的核心,全组态相互作用(FCI)的基态能量的苯分子在一个标准的相关一致的基础上设置双$ζ$质量。作为一个广泛的国际努力,我们的套件波函数为基础的相关方法共同代表了现代电子结构理论提供的高精度剧目的不同观点。在我们的评估中,评估的高层次的方法都发现定性同意最终的相关能量,大多数方法产生的FCI值的估计$-863$ m $E_{\text{H}}$左右。然而,我们发现从研究的方法的能量的均方根偏差是相当大的(1.3米$E_{\text{H}}$),这在光的赞誉性能的每个方法的较小的分子系统清楚地显示了面临的挑战,在扩展可靠的,近精确的相关方法,以更大的系统。虽然我们的研究所暴露的差异强调了一个事实,即目前最先进的方法仍有改进的余地,但我们仍然期望目前的评估能够为未来的基准和校准目的提供宝贵的社区资源。
英文摘要:
We report on the findings of a blind challenge devoted to determining the frozen-core, full configuration interaction (FCI) ground state energy of the benzene molecule in a standard correlation-consistent basis set of double-$ζ$ quality. As a broad international endeavour, our suite of wave function-based correlation methods collectively represents a diverse view of the high-accuracy repertoire offered by modern electronic structure theory. In our assessment, the evaluated high-level methods are all found to qualitatively agree on a final correlation energy, with most methods yielding an estimate of the FCI value around $-863$ m$E_{\text{H}}$. However, we find the root-mean-square deviation of the energies from the studied methods to be considerable (1.3 m$E_{\text{H}}$), which in light of the acclaimed performance of each of the methods for smaller molecular systems clearly displays the challenges faced in extending reliable, near-exact correlation methods to larger systems. While the discrepancies exposed by our study thus emphasize the fact that the current state-of-the-art approaches leave room for improvement, we still expect the present assessment to provide a valuable community resource for benchmark and calibration purposes going forward.
The performance of CIPSI on the ground state electronic energy of benzene
根据Eriksen等人[arXiv:2008.02678]的最新工作,我们报告了\textit{Configuration Interaction using a Perturbative Selection made Iteratively}(CIPSI)方法在cc-pVDZ基础上对苯分子的非相对论冻结核相关能的性能。按照我们通常的协议,我们得到的相关能$-863.4$ m $E_h$同意的理论估计$-863$ m $E_h$提出的Eriksen等人。使用广泛的阵列的高精度的新的电子结构方法。
Exploiting Non-Abelian Point-Group Symmetry to Estimate the Exact Ground-State Correlation Energy of Benzene in a Polarized Split-Valence Triple-Zeta Basis Set
Multielectron effects in high harmonic generation in N2 and benzene: simulation using a non-adiabatic quantum molecular dynamics approach for laser-molecule interactions
Water on BN doped benzene: A hard test for exchange-correlation functionals and the impact of exact exchange on weak binding
密度泛函理论(DFT)对弱相互作用复合物的研究主要集中在范德华色散力的重要性上,而对交换作用的研究则少之又少。在这里,通过利用水和硼和氮掺杂的苯衍生物(1,2-氮杂硼)之间的微妙的结合,我们展示了如何精确的交换可以改变复杂的结合构象。基准值已经计算了三个方向的水单体的1,2-氮杂硼杂环从明确相关的量子化学方法,我们也使用扩散量子蒙特卡罗。对于一个流行的DFT交换相关泛函的主机,我们表明,缺乏确切的交换导致错误的最低能量方向的水对1,2-氮杂硼杂环。因此,我们建议,高比例的确切交换和相关的电子结构的改善可能需要掺杂表面上的物理吸附位点和复杂的有机分子的准确预测。同时,为了预测正确的绝对相互作用能,需要通过色散包含泛函来增强对交换的准确描述,并且某些非局部范德华泛函(optB 88-和optB 86 b-vdW)对于绝对相互作用能表现得非常好。通过与水在苯和环硼氮烷(B $_3$ N $_3$ H $_6$)上的比较,我们表明这些结果可能对水与掺杂石墨烯表面的相互作用具有影响,并提出了调节相互作用能的可能方式。
Direct Analytical Evaluation of Electron-Impact Excitation Cross Sections via Multiconfigurational Binary Encounter Approach: Applications to Benzene and Naphthalene
Materials DX Research Center, National Institute of Advanced Industrial Science and Technology (AIST)(物质产业研究开发机构先进材料研究中心)