Opérateurs de Schrödinger quasi-périodiques adiabatiques : Interactions entre les bandes spectrales d’un opérateur périodique

Alexandre Fedotov[1]; Frédéric Klopp[2]

  • [1] Département de Physique Mathématique, Université d’État de Saint-Pétersbourg, 1, Ulianovskaja, 198904 Saint-Pétersbourg – Petrodvorets, Russie
  • [2] Département de Mathématique, Institut Galilée, U.R.A 7539 C.N.R.S, Université de Paris-Nord, Avenue J.-B. Clément, F-93430 Villetaneuse, France

Séminaire Équations aux dérivées partielles (2003-2004)

  • page 1-23

Abstract

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Dans cet article, nous décrivons nos résultats récents sur la théorie spectrale d’une classe d’opérateurs de Schrödinger quasi-périodiques adiabatiques sur la droite réelle. Ces opérateurs sont des perturbations périodiques lentes d’opérateurs périodiques. Nous étudions le spectre à des énergies auxquelles la perturbation lente crée une interaction forte entre deux bandes spectrales consécutives de l’opérateur périodique non perturbé. Nous décrivons le lieu et la nature du spectre ; nous nous intéressons plus particulièrement à différents phénomènes de résonance engendrés par l’interaction entre les bandes spectrales de l’opérateur périodique non perturbé.

How to cite

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Fedotov, Alexandre, and Klopp, Frédéric. "Opérateurs de Schrödinger quasi-périodiques adiabatiques : Interactions entre les bandes spectrales d’un opérateur périodique." Séminaire Équations aux dérivées partielles (2003-2004): 1-23. <http://eudml.org/doc/11097>.

@article{Fedotov2003-2004,
abstract = {This paper is devoted to the description of our recent results on the spectral behavior of one-dimensional adiabatic quasi-periodic Schrödinger operators. The specific operator we study is a slow periodic perturbation of an incommensurate periodic Schrödinger operator, and we are interested in energies where the perturbation creates a strong interaction between two consecutive bands of the background periodic operator. We describe the location of the spectrum and its nature and discuss the various new resonance phenomena due to the interaction of the spectral bands of the unperturbed periodic operator.},
affiliation = {Département de Physique Mathématique, Université d’État de Saint-Pétersbourg, 1, Ulianovskaja, 198904 Saint-Pétersbourg – Petrodvorets, Russie; Département de Mathématique, Institut Galilée, U.R.A 7539 C.N.R.S, Université de Paris-Nord, Avenue J.-B. Clément, F-93430 Villetaneuse, France},
author = {Fedotov, Alexandre, Klopp, Frédéric},
journal = {Séminaire Équations aux dérivées partielles},
language = {fre},
pages = {1-23},
publisher = {Centre de mathématiques Laurent Schwartz, École polytechnique},
title = {Opérateurs de Schrödinger quasi-périodiques adiabatiques : Interactions entre les bandes spectrales d’un opérateur périodique},
url = {http://eudml.org/doc/11097},
year = {2003-2004},
}

TY - JOUR
AU - Fedotov, Alexandre
AU - Klopp, Frédéric
TI - Opérateurs de Schrödinger quasi-périodiques adiabatiques : Interactions entre les bandes spectrales d’un opérateur périodique
JO - Séminaire Équations aux dérivées partielles
PY - 2003-2004
PB - Centre de mathématiques Laurent Schwartz, École polytechnique
SP - 1
EP - 23
AB - This paper is devoted to the description of our recent results on the spectral behavior of one-dimensional adiabatic quasi-periodic Schrödinger operators. The specific operator we study is a slow periodic perturbation of an incommensurate periodic Schrödinger operator, and we are interested in energies where the perturbation creates a strong interaction between two consecutive bands of the background periodic operator. We describe the location of the spectrum and its nature and discuss the various new resonance phenomena due to the interaction of the spectral bands of the unperturbed periodic operator.
LA - fre
UR - http://eudml.org/doc/11097
ER -

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