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The molecular Aharonov-Bohm effect for bound states beyond the adiabatic approximation
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry, Quantum Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical Chemistry, Quantum Chemistry.
1994 (English)In: Chemical Physics, ISSN 0301-0104, E-ISSN 1873-4421, Vol. 186, no 1, 17-26 p.Article in journal (Refereed) Published
Abstract [en]

The linear Exe Jahn-Teller model with an “extrinsic” Aharonov-Bohm solenoid of strength α, previously studied by Mead at the adiabatic level, is generalized to the vicbronic case. Energies and eigenfunctions of the full vibronic Hamiltonian are calculated using eigenfunctions of a two-dimensional harmonic oscillator with the solenoid at the origin. Oscillating spin denstities and concomitant Ham's reduction factors are evaluated. The neglect of the diagonal vector potentials is equivalent to α= 1/2 and, in this case, the reduction factors vanish for vibronic angular momentum j = 1/2. The symmetries of the model are studied by partitioning technique. In the adiabatic regime, vibronic spectra with α=0 and 1/2 are compared to adiabatic calculations showing that the neglect of the diagonal vector potentials influences the spectra more than the adiabatic approximation. Finally, with α=1/2, degeneracies in the spectra show up at some vibronic coupling strengths, indicating a hidden dynamical symmetry.

Place, publisher, year, edition, pages
1994. Vol. 186, no 1, 17-26 p.
Keyword [en]
Molecular Aharonov-Bohm effect, Jahn-Teller effect, vibronic coupling
National Category
Physical Sciences
Research subject
Physics with specialization in Quantum Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-45736DOI: 10.1016/0301-0104(94)00156-1ISI: A1994PC46100002OAI: oai:DiVA.org:uu-45736DiVA: diva2:73645
Available from: 2007-02-06 Created: 2007-02-06 Last updated: 2017-12-05

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Sjöqvist, ErikGoscinski, Osvaldo

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