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Type of publication: Straipsnis kitose duomenų bazėse / Article in other databases (S4)
Field of Science: Informatika / Computer science (N009)
Author(s): Deveikis, Algirdas;Kamuntavičius, Gintautas Pranciškus
Title: New possibilities of harmonic oscillator basis application for quantum system description : two particles with coulomb interaction
Is part of: Journal of modern physics [electronic resource]. Irvine, USA : Scientific Research Publishing, 2015, vol. 6, no. 4
Extent: p. 403-413
Date: 2015
Note: ISSN online: 2153-120X
Keywords: Harmonic oscillator basis;Spurious states;Variational method;Quantum systems;Coulomb potential
Abstract: This paper is addressed to the problem of Galilei invariant basis construction for identical fermions systems. The recently introduced method for spurious state elimination from expansions in harmonic oscillator basis [1] is adopted and applied to bound states of two particles system with Coulomb potential description. Traditional expansions in this case demonstrate the extremely well-known slow convergence, and hence this is the best problem with known exact solutions for the test of the method. Obtained results demonstrate the significant simplification of the problem and fast convergence of expansions. We show that the application of this general method is very efficient in a test case of the energy spectrum calculation problem of two particles with different masses interacting with Coulomb potential
Affiliation(s): Fizikos katedra
Gamtos mokslų fakultetas
Informatikos fakultetas
Taikomosios informatikos katedra
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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