Onset of wave fronts in a discrete bistable medium.
The transition from a standing front to a traveling front is studied in an array of symmetric bistable coupled oscillators. The mechanism leading to propagation may be understood in the context of a gluing bifurcation involving a pair of homoclinic loops. The velocity of the front shows a logarithmic dependence with the coupling strength according to this mechanism.
Pazó
D
D
Grupo de Física non Lineal, Facultade de Física, Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain. diego@fmmeteo.usc.es
Pérez-Muñuzuri
V
V