Space covering by growing rays

Details Space covering by growing rays Space covering by growing rays

1995-11-06

arxiv.org/abs/cond-mat/9511032v1

J. Phys. A 29, 2959 (1996).

Physics

Condensed Matter

14 page, latex, postscript file available from http://arnold.uchicago.edu/~ebn

Scientific paper

10.1088/0305-4470/29/12/006

We study kinetic and jamming properties of a space covering process in one dimension. The stochastic process is defined as follows: Seeds are nucleated randomly in space and produce rays which grow with a constant velocity. The growth stops upon collision with another ray. For arbitrary distributions of the growth velocity, the exact coverage, velocity and size distributions are evaluated for both simultaneous and continuous nucleation. In general, simultaneous nucleation exhibits a stronger dependence on the details of the growth velocity distribution in the asymptotic time regime. The coverage in the continuous case exhibits a universal $1/t$ approach to the jammed state, while an inhomogeneous version of the process leads to nonuniversal $t^{-p_+}$ decay, with $0\le p_+\le 1$ the fraction of right growing rays.

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