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- W2164385404 abstract "The existence of stable solitons and localized vortices in two- and three-dimensional (2D and 3D) media governed by the cubic nonlinear Schrödinger equation with a periodic potential is demonstrated by means of the variational approximation (VA) and in direct simulations. In the 2D case, multi-mode (hexagonal, triangular, and quasi-periodic) potentials are considered (including search for vortex solitons in them), along with the usual square potential. In the 2D and 3D cases, low-dimensional (respectively, quasi-1D and quasi-2D) potentials are considered too. Families of solitons include single- and multi-peaked ones. Solitons of the former type and their stability are well predicted by VA. Collisions of multidimensional solitons in a low-dimensional periodic potential are also studied. Head-on collisions of in-phase solitons lead to their fusion into a collapsing pulse. Solitons colliding in adjacent lattice-induced channels may form a bound state (BS), which then relaxes to a stable asymmetric form. An initially unstable soliton splits into a three-soliton BS. The results apply to Bose-Einstein condensates (BECs) in optical lattices (OLs), and to spatial or spatiotemporal solitons in layered optical media." @default.
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- W2164385404 date "2006-03-01" @default.
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- W2164385404 title "Multidimensional Solitons and Vortices in Periodic Potentials" @default.
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- W2164385404 doi "https://doi.org/10.1007/1-4020-2190-9_5" @default.
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