title: Modeling dynamically heterogeneous coupled relaxations.
abstract: A model describing dynamically heterogeneous relaxation in complex coupled systems is presented. The model predicts the splitting of a high-temperature single Debye relaxation to a low-temperature bimodal relaxation. The bimodal process shows a crossover from a Debye-type relaxation to an approximately stretched-exponential relaxation. Some general features of relaxation in complex systems emerge from the predictions of the model, and a comparison of the model with experiments is reported.
authors.affiliation: Department of Physics, Nanjing University, Nanjing 210093, China.
authors.forename: Y N
authors.initials: YN
authors.lastname: Huang
authors.forename: C J
authors.initials: CJ
authors.lastname: Wang
authors.forename: K L
authors.initials: KL
authors.lastname: Ngai
authors.forename: Y N
authors.initials: YN
authors.lastname: Wang
authors.forename: E
authors.initials: E
authors.lastname: Riande