A multi-species model with interconversion, chipping and injection

Details A multi-species model with interconversion, chipping and injection A multi-species model with interconversion, chipping and injection

2011-05-03

arxiv.org/abs/1105.0484v2

Phys. Rev. E 84, 031106 (2011)

Physics

Condensed Matter

Statistical Mechanics

16 pages, 12 figures

Scientific paper

10.1103/PhysRevE.84.031106

Motivated by the phenomenology of transport through the Golgi apparatus of cells, we study a multi-species model with boundary injection of one species of particle, interconversion between the different species of particle, and driven diffusive movement of particles through the system by chipping of a single particle from a site. The model is analysed in one dimension using equations for particle currents. It is found that, depending on the rates of various processes and the asymmetry in the hopping, the system may exist either in a steady phase, in which the average mass at each site attains a time-independent value, or in a "growing" phase, in which the total mass grows indefinitely in time, even in a finite system. The growing phases have interesting spatial structure. In particular, we find phases in which some spatial regions of the system have a constant average mass, while other regions show unbounded growth.

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