Nucleus-nucleus correlation function in non-Born-Oppenheimer molecular calculations: Vibrationally excited states of HD+

Sergiy Bubin, Ludwik Adamowicz

Research output: Contribution to journalArticle

21 Scopus citations


In the present work, we studied HD+ (dpe) molecular ion in the framework of variational method without assuming the Born-Oppenheimer approximation. The non-adiabatic wave function was expanded in terms of explicitly correlated Gaussian basis functions. An algorithm for calculating the nucleus-nucleus correlation function (i.e., the probability density of one nucleus in the reference frame where the other one is at the origin) was derived, implemented, and used to depict all bound states of HD+ with zero rotational energy.

Original languageEnglish (US)
Pages (from-to)185-191
Number of pages7
JournalChemical Physics Letters
Issue number1-3
Publication statusPublished - Feb 14 2005
Externally publishedYes


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces
  • Condensed Matter Physics

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