Artículo
Variational approach to the Schrödinger equation with a delta-function potential
Fecha de publicación:
03/2022
Editorial:
IOP Publishing
Revista:
European Journal of Physics
ISSN:
0143-0807
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We obtain accurate eigenvalues of the one-dimensional Schrödinger equation with a Hamiltonian of the form H g = H + gd(x), where d(x) is the Dirac delta function. We show that the well known Rayleigh-Ritz variational method is a suitable approach provided that the basis set takes into account the effect of the Dirac delta on the wavefunction. Present analysis may be suitable for an introductory course on quantum mechanics to illustrate the application of the Rayleigh-Ritz variational method to a problem where the boundary conditions play a relevant role and have to be introduced carefully into the trial function. Besides, the examples are suitable for motivating the students to resort to any computer-algebra software in order to calculate the required integrals and solve the secular equations.
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Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Citación
Fernández, Francisco Marcelo; Variational approach to the Schrödinger equation with a delta-function potential; IOP Publishing; European Journal of Physics; 43; 2; 3-2022; 1-7; 025401
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