Sökning: "Discrete breather"

Hittade 3 avhandlingar innehållade orden Discrete breather.

  1. 1. Effects of aperiodic order for Josephson junction arrays and discrete breathers

    Författare :Erik Lennholm; Linköpings universitet; []
    Nyckelord :Aperiodic order; Josephson junction array; Discrete breather;

    Sammanfattning : Effects of the combination of nonlinearities and aperiodic order is studied in this thesis. The nonlinear systems considered are Josephson junction arrays (JJA) and Fermi-Pasta-Ulam (FPU) lattices. Both systems are discrete and one-dimensional. The traveling waves in a JJA are solitons, i. LÄS MER

  3. 2. Physical effects of nonlinearity in discrete onedimensional systems with spatial variations

    Författare :Erik Lennholm; Luis Mario Floria; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Physical properties of a solid are affected, to a very high degree, by the spatial structure of the material at hand. This thesis is concerned with such effects in nonlinear systems. In itself, nonlinearity is a subject on the move, and more and more areas of physics tend to take nonlinear effects into account. LÄS MER

  4. 3. Stability and Mobility of Localized and Extended Excitations in Nonlinear Schrödinger Models

    Författare :Michael Öster; Magnus Johansson; Sergej Flach; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Non-linear dynamics; chaos; Icke-linjär dynamik; kaos;

    Sammanfattning : This thesis is mainly concerned with the properties of some discrete nonlinear Schrödinger equations. These naturally arise in many different physical contexts as the limiting form of general dynamical lattice equations that incorporate nonlinearity and coupling. LÄS MER