- 93-314 Elmer F., Eckmann J.-P., Hartsleben G..
- Dual Fronts Propagating into an Unstable State
(288K, Postscript)
Nov 26, 93
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Abstract. The interface between an unstable state and a stable state usually
develops a single confined front travelling with constant velocity
into the unstable state. Recently, the splitting of such an interface
into {\em two} fronts propagating with {\em different} velocities was
observed
numerically in a magnetic system. The intermediate state is unstable
and grows linearly in time. We first establish rigorously the
existence of this phenomenon, called
``dual front,''
for a class
of structurally unstable one-component models.
Then we use this insight to explain
dual fronts for a generic two-component reaction-diffusion system,
and for the magnetic system.
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