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Modelos da Química Quântica no espaço de momento: diferentes representações de um mesmo sistema

2009; Brazilian Chemical Society; Volume: 32; Issue: 9 Linguagem: Inglês

10.1590/s0100-40422009000900045

ISSN

1678-7064

Autores

Willian Hermoso, Fernando R. Ornellas,

Tópico(s)

Chemistry Education and Research

Resumo

OF THE SAME SYSTEM.The conventional approach to simple quantum chemistry models is contrasted with that known as momentum representation, where the wavefunctions are momentum dependent.Since the physical interactions are the same, state energies should not change, and whence the energy differences correlating with the real world as spectral lines or bands.We emphasize that one representation is not more fundamental than the other, and the choice is a matter of mathematical convenience.As spatial localization is rooted in our brains, to think in terms of the momentum present us a great mental challenge that can lead to complementary perspectives of a model.

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