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arXiv 2109.04542physics.chem-phphysics.atom-phquant-ph
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三体库仑系统中原子到分子形状连续转变的表征

Characterization of the continuous transition from atomic to molecular shape in the three-body Coulomb system

Laura D. Salas, Barbara Zamora-Yusti, Julio C. Arce

摘要:

我们提出了一个替代的,univocular表征的连续过渡从原子到分子的形状在库仑系统由两个相同的粒子和第三个粒子与相反的电荷,作为粒子的质量比的变化。对变分优化的波函数应用边际条件精确因式分解,构造了一个非绝热的基态单粒子与全同粒子之间相对运动的势能面.这种转变是通过这种表面的地形和相关的边缘和条件分布的形状的质量比的演变。我们的方法统一和扩展到非绝热制度的玻恩-奥本海默和电荷分布图片的分子形状。

英文摘要:

We present an alternative, univocal characterization of the continuous transition from atomic to molecular shape in the Coulomb system constituted by two identical particles and a third particle with the opposite charge, as the mass ratio of the particles varies. Applying a marginal-conditional exact factorization to a variationally optimized wavefunction, we construct a nonadiabatic potential energy surface for the relative motion between the single particle and each of the identical particles in the ground state. The transition is revealed through the evolution with the mass ratio of the topography of such surface and of the shapes of the associated marginal and conditional distributions. Our approach unifies and extends to the nonadiabatic regime the Born-Oppenheimer and charge-distribution pictures of molecular shape.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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