Interplay of superradiance and disorder in the Anderson Model

Fausto Borgonovi, Giuseppe Celardo, L. Kaplan

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

28 Citazioni (Scopus)

Abstract

Using a non-Hermitian Hamiltonian approach to open systems, we study the interplay of disorder and super- radiance in a one-dimensional Anderson model. Analyzing the complex eigenvalues of the non-Hermitian Hamiltonian, a transition to a superradiant regime is shown to occur. As an effect of openness the structure of eigenstates undergoes a strong change in the superradiant regime: we show that the sensitivity to disorder of the superradiant and the subradiant subspaces is very different; superradiant states remain delocalized as disorder increases, while subradiant states are sensitive to the degree of disorder.
Lingua originaleEnglish
pagine (da-a)250-260
Numero di pagine11
RivistaFortschritte der Physik
Volume2013
DOI
Stato di pubblicazionePubblicato - 2013

Keywords

  • anderson localization
  • open quantum systems

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