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Rovibrational states of Wigner molecules in spherically symmetric confining potentials

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Cioslowski,  Jerzy
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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引用

Cioslowski, J. (2016). Rovibrational states of Wigner molecules in spherically symmetric confining potentials. The Journal of Chemical Physics, 145(5):. doi:10.1063/1.4959899.


引用: https://hdl.handle.net/11858/00-001M-0000-002B-A16D-8
要旨
The strong-localization limit of three-dimensional Wigner molecules, in which repulsively interacting particles are confined by a weak spherically symmetric potential, is investigated. An explicit prescription for computation of rovibrational wavefunctions and energies that are asymptotically exact at this limit is presented. The prescription is valid for systems with arbitrary angularly-independent interparticle and confining potentials, including those involving Coulombic and screened ( i. e., Yukawa/Debye) interactions. The necessary derivations are greatly simplified by explicit constructions of the Eckart frame and the parity-adapted primitive wavefunctions. The performance of the new formalism is illustrated with the three-and four-electron harmonium atoms at their strong-correlation limits. In particular, the involvement of vibrational modes with the E symmetry is readily pinpointed as the origin of the "anomalous" weak-confinement behavior of the S-1(+) state of the four-electron species that is absent in its D-1(+) companion of the strong-confinement regime. Published by AIP Publishing.