Quantum computation solves a half-century-old enigma: Elusive vibrational states of magnesium dimer found
Quantum computation solves a half-century-old enigma: Elusive vibrational states of magnesium dimer found
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量子计算解决了半个世纪之久的谜团:发现了镁二聚体难以捉摸的振动态
DOI:
10.1126/sciadv.aay4058
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发表时间:
2020
期刊:
影响因子:
13.6
通讯作者:
Piecuch, Piotr
中科院分区:
文献类型:
--
作者:
Yuwono, Stephen H.;Magoulas, Ilias;Piecuch, Piotr
The high-lying vibrational states of the magnesium dimer (Mg2), which has been recognized as an important system in studies of ultracold and collisional phenomena, have eluded experimental characterization for half a century. Until now, only the first 14 vibrational states of Mg2have been experimentally resolved, although it has been suggested that the ground-state potential may support five additional levels. Here, we present highly accurate ab initio potential energy curves based on state-of-the-art coupled-cluster and full configuration interaction computations for the ground and excited electronic states involved in the experimental investigations of Mg2. Our ground-state potential unambiguously confirms the existence of 19 vibrational levels, with ~1 cm−1root mean square deviation between the calculated rovibrational term values and the available experimental and experimentally derived data. Our computations reproduce the latest laser-induced fluorescence spectrum and provide guidance for the experimental detection of the previously unresolved vibrational levels.
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DOI:
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发表时间:
2001
期刊:
影响因子:
--
作者:
S. Porsev;A. Derevianko
通讯作者:
A. Derevianko
DOI:
--
发表时间:
1970
期刊:
影响因子:
--
作者:
W. Stwalley
通讯作者:
W. Stwalley
影响因子:
4.4
作者:
E. Krotscheck;R. Zillich
通讯作者:
R. Zillich
DOI:
10.1063/1.4792725
发表时间:
2013-03
期刊:
The Journal of chemical physics
影响因子:
--
作者:
H. Knöckel;S. Rühmann;E. Tiemann
通讯作者:
H. Knöckel;S. Rühmann;E. Tiemann
DOI:
--
发表时间:
1972
期刊:
影响因子:
--
作者:
W. J. Balfour;R. F. Whitlock
通讯作者:
R. F. Whitlock