TY - JOUR
ID - upm21671
UR - http://oa.upm.es/21671/
A1 - Elaskar, Sergio
A1 - Sanmartín Losada, Juan Ramón
Y1 - 2004///
N2 - The derivative nonlinear Schrödinger (DNLS) equation, describing propagation of circularly polarized Alfven waves of finite amplitude in a cold plasma, is truncated to explore the coherent, weakly nonlinear, cubic coupling of three waves near resonance, one wave being linearly unstable and the other waves damped. In a reduced three-wave model (equal damping of daughter waves, three-dimensional flow for two wave amplitudes and one relative
phase), no matter how small the growth rate of the unstable wave there exists a parametric domain with the flow exhibiting chaotic dynamics that is absent for zero growth-rate. This hard transition in phase-space behavior occurs for left-hand (LH) polarized waves, paralelling the known fact that only LH time-harmonic solutions of the DNLS equation are modulationally unstable.
PB - Asociación Argentania de Mecánica Computacional
JF - Mecánica computacional
VL - XXIII
SN - 1666-6070
TI - Reduced three-wave model to study the hard transition to chaotic dynamics in Alfven wave-fronts
SP - 2461
AV - public
EP - 2476
ER -