34 citations · 136 across the 11 of their papers we have counts for
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quant-ph2010★ 2 cited
Coupled anharmonic oscillators: the Rayleigh-Ritz approach versus the collocation approach
Arkadiusz Kuros, Anna Okopinska
For a system of coupled anharmonic oscillators we compare the convergence rate of the variational collocation approach presented recently by Amore and Fernandez (2010 Phys.Scr.81 0…
quant-ph2010★ 12 cited
The optimized Rayleigh-Ritz scheme for determining the quantum-mechanical spectrum
Przemyslaw Koscik, Anna Okopinska
The convergence of the Rayleigh-Ritz method with nonlinear parameters optimized through minimization of the trace of the truncated matrix is demonstrated by a comparison with analy…
quant-ph2010★ 34 cited
Two-electron entanglement in elliptically deformed quantum dots
Przemyslaw Koscik, Anna Okopinska
Entropic entanglement measures of a two-dimensional system of two Coulombically interacting particles confined in an anisotropic harmonic potential are discussed in dependence on t…