Curve crossing in a manifold of coupled electronic states: direct quantum dynamics simulations of formamide.
Curve crossing in a manifold of coupled electronic states: direct quantum dynamics simulations of formamide.
复制标题
多种耦合电子态的曲线交叉:甲酰胺的直接量子动力学模拟。
DOI:
10.1039/c8fd00090e
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发表时间:
2018
影响因子:
3.4
通讯作者:
Spinlove KE
中科院分区:
文献类型:
--
作者:
Spinlove KE
Quantum dynamics simulations are an important tool to evaluate molecular behaviour including the, often key, quantum nature of the system. In this paper we present an algorithm that is able to simulate the time evolution of a molecule after photo-excitation into a manifold of states. The direct dynamics variational multi-configurational Gaussian (DD-vMCG) method circumvents the computational bottleneck problems of traditional grid-based methods by computing the potential energy functions on-the-fly, i.e. only where required. Unlike other commonly used direct dynamics methods, DD-vMCG is fully quantum mechanical. Here, the method is combined with a novel on-the-fly diabatisation scheme to simulate the short-time dynamics of the key molecule formamide and its acid analogue formimidic acid. This is a challenging test system due to the nature and large number of excited states, and eight coupled states are included in the calculations. It is shown that the method is able to provide unbiased information on the product channels open after excitation at different energies and demonstrates the potential to be a practical scheme, limited mainly by the quality of the quantum chemistry used to describe the excited states.
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影响因子:
2.9
作者:
Allan, Charlotte S. M.;Lasorne, Benjamin;Robb, Michael A.
通讯作者:
Robb, Michael A.
影响因子:
2.9
作者:
B. Esry;H. Sadeghpour
通讯作者:
H. Sadeghpour
影响因子:
15
作者:
L. Serrano;M. Fülscher
通讯作者:
M. Fülscher
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Gareth W Richings;S. Habershon
通讯作者:
S. Habershon
影响因子:
11.7
作者:
R. Saladino;C. Crestini;S. Pino;G. Costanzo;E. Di Mauro
通讯作者:
E. Di Mauro