Patterns formed by spiral pairs in oscillatory media
S. Komineas, F. Heilmann and L. Kramer
Physikalisches Institut, Universitaet Bayreuth D-95440 Bayreuth, Germany
We investigate by numerical simulations the dynamics
of spiral pairs which are found in oscillatory and excitable media
as described by the Complex Ginzburg-Landau equation.
Our simulations include two spiral pairs which approach
each other and interact.
The spirals typically exchange partners and form new pairs.
This type of interaction gives rise
to some patterns: a right-angle scattering pattern,
a rotating state coming out of two traveling pairs
and a symmetric spiral lattice.
The scenarios are compared to other conservative and dissipative
systems where scattering at right-angles is also observed.