Accurate and Interpretable Representation of Correlated Electronic Structure via Tensor Product Selected CI
Accurate and Interpretable Representation of Correlated Electronic Structure via Tensor Product Selected CI
复制标题
通过张量积选择 CI 准确且可解释地表示相关电子结构
DOI:
10.1039/d4fd00049h
复制
发表时间:
2024
影响因子:
3.4
通讯作者:
Mayhall, Nicholas J.
中科院分区:
文献类型:
--
作者:
Braunscheidel, Nicole M;Bachhar, Arnab;Mayhall, Nicholas J.
The task of computing wavefunctions that are accurate, yet simple enough mathematical objects to use for reasoning, has long been a challenge in quantum chemistry. The difficulty in drawing physical conclusions from a wavefunction is often related to the generally large number of configurations with similar weights. In Tensor Product Selected Configuration Interaction (TPSCI), we use a locally correlated tensor product state basis, which has the effect of concentrating the weight of a state onto a smaller number of physically interpretable degrees of freedom. In this paper, we apply TPSCI to a series of three molecular systems ranging in separability, one of which is the first application of TPSCI to an open-shell bimetallic system. For each of these systems, we obtain accurate solutions to large active spaces, and analyze the resulting wavefunctions through a series of different approaches including (i) direct inspection of the TPS basis coefficients, (ii) construction of Bloch effective Hamiltonians, and (iii) computation of cluster correlation functions.
登录
查看更多内容
影响因子:
5.9
作者:
Johnson, Justin C.
通讯作者:
Johnson, Justin C.
影响因子:
5.5
作者:
Athanasios Papastathopoulos-Katsaros;C. Jiménez-Hoyos;T. M. Henderson;G. Scuseria
通讯作者:
Athanasios Papastathopoulos-Katsaros;C. Jiménez-Hoyos;T. M. Henderson;G. Scuseria
影响因子:
5.5
作者:
Shane M. Parker;T. Shiozaki
通讯作者:
T. Shiozaki
影响因子:
4.4
作者:
N. Mayhall;M. Head‐Gordon
通讯作者:
M. Head‐Gordon
DOI:
10.1063/1.4820485
发表时间:
2013
期刊:
The Journal of chemical physics
影响因子:
--
作者:
S. Fatehi;Ethan C Alguire;Joseph E. Subotnik
通讯作者:
Joseph E. Subotnik