On the emergence of molecular structure

On the emergence of molecular structure
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DOI:
10.1103/physreva.83.052512
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发表时间:
2011-05-19
期刊:
影响因子:
2.9
通讯作者:
Reiher, Markus
Reiher, Markus
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Matyus, Edit;Hutter, Juerg;Reiher, Markus

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{a(+/-),a(+/-),B(+/-)}型库仑系统的结构由a型粒子的有效基态密度表征,该密度通过非相对论量子力学计算而不引入Born-Oppenheimer近似。当改变a型和b型粒子的相对质量时,观察到结构转变,例如,H-和H-2(+)的区别。粒子密度分布图表明正电子素离子Ps(-)的分子型行为。
The structure of {a(+/-),a(+/-),b(+/-)}-type Coulombic systems is characterized by the effective ground-state density of the a-type particles, computed via nonrelativistic quantum mechanics without introduction of the Born-Oppenheimer approximation. A structural transition is observed when varying the relative mass of the a- and b-type particles, e.g., between atomic H- and molecular H-2(+). The particle-density profile indicates a molecular-type behavior for the positronium ion, Ps(-).