Artículo
Weakly bound states in heterogeneous waveguides
Fecha de publicación:
07/2016
Editorial:
Springer
Revista:
European Physical Journal B - Condensed Matter
ISSN:
1434-6028
e-ISSN:
1434-6036
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study the spectrum of the Helmholtz equation in a two-dimensional infinite waveguide, containing a weak heterogeneity localized at an internal point, and obeying Dirichletboundary conditions at its border. We use the variational theorem to derive the conditionfor which the lowest eigenvalue of the spectrum falls below the continuum threshold and abound state appears, localized at the heterogeneity. We devise a rigorous perturbationscheme and derive the exact expression for the energy to third order in theheterogeneity.
Palabras clave:
Mesoscopic
,
Nanoscale Systems
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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
Amore, Paolo; Fernández, Francisco Marcelo; Hoffman, Christoph P.; Weakly bound states in heterogeneous waveguides; Springer; European Physical Journal B - Condensed Matter; 89; 7; 7-2016; 163-180
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