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Nonreciprocal wave propagation through open, discrete nonlinear Schroedinger dimers
Stefano Lepri, Giulio Casati
We consider asymmetric (nonreciprocal) wave transmission through a layered nonlinear, non mirror-symmetric system described by the one-dimensional Discrete Nonlinear Schrödinger eq…
Fluctuations in a diffusive medium with gain
Stefano Lepri
We present a stochastic model for amplifying, diffusive media like, for instance, random lasers. Starting from a simple random-walk model, we derive a stochastic partial differenti…
Scattering lengths and universality in superdiffusive Lévy materials
R. Burioni, S. di Santo, S. Lepri +1
We study the effects of scattering lengths on Lévy walks in quenched one-dimensional random and fractal quasi-lattices, with scatterers spaced according to a long-tailed distributi…
The nonequilibrium discrete nonlinear Schroedinger equation
S. Iubini, S. Lepri, A. Politi
We study nonequilibrium steady states of the one-dimensional discrete nonlinear Schroedinger equation. This system can be regarded as a minimal model for stationary transport of bo…
Asymmetric Wave Propagation Through Nonlinear PT-symmetric Oligomers
J. D'Ambroise, P. G. Kevrekidis, S. Lepri
In the present paper, we consider nonlinear PT-symmetric dimers and trimers (more generally, oligomers) embedded within a linear Schr{ö}dinger lattice. We examine the stationary st…