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dc.contributor.authorFassari, Silvestro
dc.contributor.authorGadella Urquiza, Manuel 
dc.contributor.authorGlasser, M. Lawrence
dc.contributor.authorNieto Calzada, Luis Miguel 
dc.contributor.authorRinaldi, F.
dc.date.accessioned2020-05-16T10:36:23Z
dc.date.available2020-05-16T10:36:23Z
dc.date.issued2019
dc.identifier.citationPhysica Scripta, 2019, vol. 94es
dc.identifier.issn0031-8949es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/40850
dc.description.abstractWe study three solvable two-dimensional systems perturbed by a point interaction centered at the origin. The unperturbed systems are the isotropic harmonic oscillator, a square pyramidal potential and a combination thereof. We study the spectrum of the perturbed systems. We show that, while most eigenvalues are not affected by the point perturbation, a few of them are strongly perturbed. We show that for some values of one parameter, these perturbed eigenvalues may take lower values than the immediately lower eigenvalue, so that level crossings occur. These level crossings are studied in some detail.es
dc.format.mimetypeapplication/pdfes
dc.language.isospaes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.titleSpectral properties of the two-dimensional Schrödinger Hamiltonian with various solvable confinements in the presence of a central point perturbationes
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1088/1402-4896/ab0589es
dc.identifier.publicationfirstpage055202es
dc.identifier.publicationissue5es
dc.identifier.publicationtitlePhysica Scriptaes
dc.identifier.publicationvolume94es
dc.peerreviewedSIes
dc.identifier.essn1402-4896es
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones


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