Regensburg 2004 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.26: Poster

Donnerstag, 11. März 2004, 16:00–18:00, Poster D

Hydrodynamic Lyapunov Modes in Coupled Map Lattices — •Hongliu Yang and Günter Radons — Institut für Physik, Theoretische Physik I, Technische Universität Chemnitz, D-09107 Chemnitz

We present numerical results, which indicate that hydrodynamic Lyapunov modes also exist for Coupled Map Lattices. We discuss under which conditions these modes can be observed. The role of conserved quantities, dissipation and of boundary conditions is elaborated. The questions are investigated for standard maps and circle maps with different types of couplings. We find, for instance, that diffusive couplings do not support hydrodynamic Lyapunov modes. In contrast, for force-like interactions between maps such modes can be found.