2007/08/23 by A. Fratalocchi, G. Assanto
Physics and Astronomy · #physics.optics #physics.gen-ph
paper · pdf · doi:10.1103/physreva.76.042108
6 Pages, to appear in Phys. Rev. A
arxiv created 2007/08/23 · arxiv updated 2009/12/01
We address the universal applicability of the discrete nonlinear Schroedinger equation. By employing an original but general top-down/bottom-up procedure based on symmetry analysis to the case of optical lattices, we derive the most widely applicable and the simplest possible model, revealing that the discrete nonlinear Schroedinger equation is ``universally'' fit to describe light propagation even in discrete tensorial nonlinear systems and in the presence of nonparaxial and vectorial effects.