title: Sticky spheres, entropy barriers, and nonequilibrium phase transitions.
abstract: A sticky spheres model to describe slow dynamics of a nonequilibrium system is proposed. The dynamical slowing down is due to the presence of entropy barriers. An exact steady state analysis of the representative mean field equations, in the case when the clusters are chosen with the same a priori probability, demonstrates a nonequilibrium phase transition from an exponential cluster size distribution to a power law.
authors.affiliation: High Pressure Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. glass@apsara.barc.ernet.in
authors.forename: S L
authors.initials: SL
authors.lastname: Narasimhan
authors.forename: P S
authors.initials: PS
authors.lastname: Krishna
authors.forename: K P
authors.initials: KP
authors.lastname: Murthy