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arXiv 1206.4239quant-phmath-phmath.MP
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分子的量子理论

On the Quantum Theory of Molecules

Brian T. Sutcliffe, R. Guy Woolley

摘要:

过渡态理论在20世纪30年代被引入来解释化学反应。这个理论的核心是势能面的概念。有人假设这样的表面可以使用分子(库仑)哈密顿量的薛定谔方程的本征解来构造,但当时这样的计算是不可能的。现在量子力学从头计算电子结构的计算是常规的,从他们的结果可以构建PES被认为是近似那些假定可从本征解导出。有人在此指出,这种看法是没有根据的。我们认为,势能面的构造更适合于作为量子力学在化学上的合理而有效的修正

英文摘要:

Transition state theory was introduced in the 1930s to account for chemical reactions. Central to this theory is the idea of a potential energy surface (PES). It was assumed that such a surface could be constructed using eigensolutions of the Schrödinger equation for the molecular (Coulomb) Hamiltonian but at that time such calculations were not possible. Nowadays quantum mechanical ab-initio electronic structure calculations are routine and from their results PESs can be constructed which are believed to approximate those assumed derivable from the eigensolutions. It is argued here that this belief is unfounded. It is suggested that the potential energy surface construction is more appropriately regarded as a legitimate and effective modification of quantum mechanics for chemical purposes

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