title: Condensation in zero-range processes on inhomogeneous networks.
abstract: We investigate the role of inhomogeneities in zero-range processes in condensation dynamics. We consider the dynamics of balls hopping between nodes of a network with one node of degree k_{1} much higher than a typical degree k , and find that the condensation is triggered by the inhomogeneity and that it depends on the ratio k_{1}k . Although, on the average, the condensate takes an extensive number of balls, its occupation can oscillate in a wide range. We show that in systems with strong inhomogeneity, the typical melting time of the condensate grows exponentially with the number of balls.
authors.affiliation: Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany. bwaclaw@th.if.uj.edu.pl
authors.forename: B
authors.initials: B
authors.lastname: Waclaw
authors.forename: L
authors.initials: L
authors.lastname: Bogacz
authors.forename: Z
authors.initials: Z
authors.lastname: Burda
authors.forename: W
authors.initials: W
authors.lastname: Janke