Condensation in zero-range processes on inhomogeneous networks
arXiv:cond-mat/0703243 · doi:10.1103/PhysRevE.76.046114
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, and find that the condensation is triggered by the ratio k_1/k of the highest degree k_1 to the average degree k. Although the condensate takes on the average 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.
10 pages, 5 figures
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