INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Comment on: ?Coupled anharmonic oscillators: the Raileigh-Ritz approach versus the collocation approach?
Autor/es:
P. AMORE; FRANCISCO MARCELO FERNÁNDEZ; MARTIN RODRIGUEZ
Revista:
PHYSICA SCRIPTA - (Print)
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2011 vol. 83 p. 7003 - 7006
ISSN:
0031-8949
Resumen:
We show that some of the conclusions drawn recently about the performance and convergenceof the little sinc functions collocation method are misleading. To this end, we prove the convergence of the method and recalculate the ground-state energy for the Pullen?Edmonds Hamiltonian. In addition, we show the results for another nonseparable Hamiltonian operator with a somewhat more complicated potential-energy function.
