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arXiv · 1204.3325

Interplay of superradiance and disorder in the Anderson Model

G. L. Celardo·A. Biella·L. Kaplan·F. Borgonovi
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Abstract

Using a non-Hermitian Hamiltonian approach to open systems, we study the interplay of disorder and superradiance 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.

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G. L. Celardo, A. Biella, L. Kaplan, F. Borgonovi. 2012-04-15. Interplay of superradiance and disorder in the Anderson Model. https://doi.org/10.1002/prop.201200082

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