of Spiral Defect Chaos
Computational Homology is used as a measure of the complexity
of geometric structures in the weakly turbulent state of spiral defect
chaos in experiments on Rayleigh-Bénard convection. Different
attractors of spiral defect chaos are distinguished by their homology.
This technique reveals asymmetric patterns. In addition global
stochastic ergodicity is observed for system parameter values where
locally chaotic dynamics has been previously reported.