Hidden symmetries and thermodynamic properties for a harmonic oscillator plus an inverse square potential

Shi Hai Dong, M. Lozada-Cassou, Jiang Yu, Felipe Jiménez-Ángeles, A. L. Rivera

Research output: Contribution to conferencePaper

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Abstract

The exact solutions of a one-dimensional Schrödinger equation with a harmonic oscillator plus an inverse square potential are obtained. The ladder operators constructed directly from the normalized wavefunctions are found to satisfy a su(1, 1) algebra. Another hidden symmetry is used to explore the relations between the eigenvalues and eigenfunctions by substituting x → -ix. The vibrational partition function Z is calculated exactly to study thermodynamic functions such as the vibrational mean energy U, specific heat C, free energy F, and entropy S. It is both interesting and surprising to find that both vibrational specific heat C and entropy S are independent of the potential strength α. © 2006 Wiley Periodicals, Inc.
Original languageAmerican English
Pages366-371
Number of pages328
DOIs
StatePublished - 1 Feb 2007
Externally publishedYes
EventInternational Journal of Quantum Chemistry -
Duration: 1 Jan 2012 → …

Conference

ConferenceInternational Journal of Quantum Chemistry
Period1/01/12 → …

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Cite this

Dong, S. H., Lozada-Cassou, M., Yu, J., Jiménez-Ángeles, F., & Rivera, A. L. (2007). Hidden symmetries and thermodynamic properties for a harmonic oscillator plus an inverse square potential. 366-371. Paper presented at International Journal of Quantum Chemistry, . https://doi.org/10.1002/qua.21103