Modal optimisation within the time-independent eigenstate-free Raman wavefunction formalism
Modal optimisation within the time-independent eigenstate-free Raman wavefunction formalism
复制标题
时间无关的无本征态拉曼波函数形式内的模态优化
DOI:
10.1080/00268976.2019.1643047
复制
发表时间:
--
影响因子:
1.7
通讯作者:
G. Rauhut
中科院分区:
文献类型:
--
作者:
T. Petrenko;G. Rauhut
The time-independent eigenstate-free Raman wavefunction approach, which is based on the vibrational inhomogeneous Schrödinger equation (ISE), is a promising alternative to the well-known sum-over-states and time-dependent methods for the calculation of optical bandshapes and resonance Raman intensities. The solution of the ISE, the Raman wavefunction (RWF), can be obtained within a vibrational configuration interaction (VCI) ansatz. In this method, the optimisation of vibrational modals can provide a better convergence of the calculated RWF towards the full VCI limit. For this purpose, the variational principle for the ISE problem is formulated. The variational condition for the modal functions leads to the complex inhomogeneous vibrational self-consistent field equations. The key aspects of the implementation of this approach are discussed. The performance of this method in comparison with the conventional scheme involving VCI bases of different quality is illustrated for theAAtransition in furan. The quantitative effects due to the modal optimisation are found to be relatively small, as compared to the impact of moderate extension of the configuration basis.
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影响因子:
5.5
作者:
T. Petrenko;G. Rauhut
通讯作者:
G. Rauhut
DOI:
10.1063/1.5018928
发表时间:
2018
期刊:
The Journal of chemical physics
影响因子:
--
作者:
T. Petrenko;G. Rauhut
通讯作者:
G. Rauhut
影响因子:
--
作者:
HELLER, EJ;SUNDBERG, RL;TANNOR, D
通讯作者:
TANNOR, D
DOI:
10.1007/bf01125947
发表时间:
1995
期刊:
Theoretica chimica acta
影响因子:
--
作者:
F. Culot;F. Laruelle;J. Liévin
通讯作者:
J. Liévin
影响因子:
2.8
作者:
CHRISTOFFEL, KM;BOWMAN, JM
通讯作者:
BOWMAN, JM