The nature of the essential spectrum in curved quantum waveguides
Krejcirik, David ; De Aldecoa, Rafael Tiedra
HAL, hal-00020311 / Harvested from HAL
Text on HAL
We study the nature of the essential spectrum of the Dirichlet Laplacian in tubes about infinite curves embedded in Euclidean spaces. Under suitable assumptions about the decay of curvatures at infinity, we prove the absence of singular continuous spectrum and state properties of possible embedded eigenvalues. The argument is based on Mourre conjugate operator method developed for acoustic multistratified domains by Benbernou and Dermenjian et al. As a technical preliminary, we carry out a spectral analysis for Schrodinger-type operators in straight Dirichlet tubes. We also apply the result to the strips embedded in abstract surfaces.
Publié le : 2004-05-05
Classification:  quantum waveguides,  Dirichlet Laplacian,  conjugate operator,  singular spectrum,  81Q10, 35Q40, 58J50,  [MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph] 
@article{hal-00020311,
     author = {Krejcirik, David and De Aldecoa, Rafael Tiedra},
     title = {The nature of the essential spectrum in curved quantum waveguides},
     journal = {HAL},
     volume = {2004},
     number = {0},
     year = {2004},
     language = {en},
     url = {http://dml.mathdoc.fr/item/hal-00020311}
}

Krejcirik, David; De Aldecoa, Rafael Tiedra. The nature of the essential spectrum in curved quantum waveguides. HAL, Tome 2004 (2004) no. 0, . http://gdmltest.u-ga.fr/item/hal-00020311/