title: Statistics of defect-mediated turbulence influenced by noise.
abstract: The influence of white noise on defect-mediated turbulence which is modeled by the complex Ginzburg-Landau equation is investigated. We show that the dynamics of defects in the noise-driven spatiotemporal chaos can be described by a simple statistical model. The noise enhances significantly the ability of the turbulent background to advocate new defects with a constant rate, and at the same time it increases the vanishing of defects in the system by introducing an additional annihilation rate that is proportional to the number of defects. A universal probability distribution function is derived for the number of defect pairs.
authors.affiliation: Department of Physics, Peking University, Beijing 100871, People's Republic of China.
authors.forename: Hongli
authors.initials: H
authors.lastname: Wang