Emergence of on-off intermittency in systems nonlinearly coupled to a nonequilibrium bath.
Approximate analytic solutions are presented for the dynamics of a classical oscillator nonlinearly coupled to a nonequilibrium bath. It is shown that as a result of the combined effect of the nonlinear coupling, which leads to nonlinear friction and multiplicative noise in the description of the reduced system, and the nonthermal properties of the reservoir, which give a specific self-sustained character to the coarse-grained oscillator, on-off intermittency can occur. Properties of this phenomenon, such as the universality in the length distribution of the laminar phase and the qualitative changes caused by the presence of additive noise, can be traced back to characteristics of the starting microscopic model.
Plata
J
J
Departamento de Física Fundamental II, Universidad de La Laguna, La Laguna E38204, Tenerife, Spain.