Symbolic-numerical Algorithm for Generating Cluster Eigenfunctions: Tunneling of Clusters Through Repulsive Barriers

A model for quantum tunnelling of a cluster comprising A identical particles, coupled by oscillator-type potential, through short-range repulsive potential barriers is introduced for the first time in the new symmetrized-coordinate representation and studied within the s-wave approximation. The symb...

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Bibliographic Details
Published in:arXiv.org 2013-06
Main Authors: Vinitsky, Sergue, Gusev, Alexander, Chuluunbaatar, Ochbadrakh, Rostovtsev, Vitaly, Luong Le Hai, Derbov, Vladimir, Krassovitskiy, Pavel
Format: Article
Language:English
Subjects:
Algorithms
Clusters
Computer algebra
Dependence
Eigenvectors
Energy transmission
Mathematical analysis
Mathematical models
Numerical analysis
Potential barriers
Quantum tunnelling
Wave functions
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Summary:A model for quantum tunnelling of a cluster comprising A identical particles, coupled by oscillator-type potential, through short-range repulsive potential barriers is introduced for the first time in the new symmetrized-coordinate representation and studied within the s-wave approximation. The symbolic-numerical algorithms for calculating the effective potentials of the close-coupling equations in terms of the cluster wave functions and the energy of the barrier quasistationary states are formulated and implemented using the Maple computer algebra system. The effect of quantum transparency, manifesting itself in nonmonotonic resonance-type dependence of the transmission coefficient upon the energy of the particles, the number of the particles A=2,3,4, and their symmetry type, is analyzed. It is shown that the resonance behavior of the total transmission coefficient is due to the existence of barrier quasistationary states imbedded in the continuum.
ISSN:2331-8422