Theoretical methods for calculating rotational-vibrational-electronic transition intensities in triatomic molecules

2022/03/17 by E. J. Zak, Zak, Emil J.
Chemistry · Physics and Astronomy · #Molecular Spectroscopy and Structure #Spectroscopy and Laser Applications #Advanced Chemical Physics Studies

paper · pdf · doi:10.48550/arxiv.2203.09241

Abstract

This article covers few selected aspects of quantum theory of molecular rotations and vibrations. Triatomic molecules are the simplest systems, which show qualitative characteristics of larger polyatomic molecules. On the minimal example of triatomic molecules we demonstrate several theoretical methods used to calculate highly accurate rotational-vibrational-electronic energies, wavefunctions and transition intensities. The reader can view this article as a tutorial, by no means comprehensive, which still touches some of the unsolved problems in modern theoretical molecular spectroscopy.

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