Rotation-tunneling spectrum of the water dimer from instanton theory.
Rotation-tunneling spectrum of the water dimer from instanton theory.
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来自瞬子理论的水二聚体的旋转隧道谱。
DOI:
10.1039/c8cp04991b
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Vaillant CL
中科院分区:
文献类型:
--
作者:
Vaillant CL
We present an extension to the ring polymer instanton (RPI) method that includes overall rotations in the tunneling pathways, allowing a calculation of the full rotation-tunneling spectrum of the water dimer. Our method gives a qualitative description of the rotational and tunneling processes underpinning the spectrum, and shows the drastic reduction of the largest splitting with increasing rotational excitation. We show that this reduction is due to the strong coupling between the rotational motion about the principal axis and the acceptor tunneling motion (where the acceptor monomer rotates about the hydrogen bond), which results in a large increase in the path length and hence the quantum action. Our method gives a clear physical understanding of the behaviour of tunneling splittings in the presence of rotations, and scales linearly with system size.
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影响因子:
1.4
作者:
E. Zwart;J. J. Meulen;W. Meerts;L. Coudert
通讯作者:
L. Coudert
DOI:
10.1063/1.5020426
发表时间:
2018-02
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Xiao-Gang Wang;T. Carrington
通讯作者:
Xiao-Gang Wang;T. Carrington
DOI:
10.1063/1.4943980
发表时间:
2016
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Mátyus E
通讯作者:
Mátyus E
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
A. Avoird;E. Olthof;P. Wormer
通讯作者:
P. Wormer
影响因子:
4.4
作者:
Groenenboom, GC;Wormer, PES;Szalewicz, K
通讯作者:
Szalewicz, K