S Havlin and B L Trus 1988 J. Phys. A: Math. Gen. 21 L731 doi:10.1088/0305-4470/21/14/004
Exact enumeration method for diffusion-limited aggregation
S Havlin and B L Trus
Show affiliationsThe authors present a new method for growing and analysing diffusion-limited aggregates (DLA). The method is based on the exact enumeration approach which enables one to calculate exactly the probability density of a random walker starting from an outer circle (at r=r1). The method yields the exact growth probabilities, pi, of the perimeter sites, i, for a given configuration as a function of time. The authors study the histogram, n(p), i.e. the number of perimeter sites having growth probability p, as a function of time, for several different boundary conditions. Their results suggest that the fluctuations in the survival times of the particle are very small compared with the large fluctuations in the growth probabilities. They find that at times of the order of r12 all growth probabilities are essentially converged. Very long survival particles have only a negligible effect on the histogram n(p) and thus on the DLA structure.
- PACS
- MSC
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82B24 Interface problems; diffusion-limited aggregation
82B41 Random walks, random surfaces, lattice animals, etc. (See also 60G50, 82C41)
- Subjects
- Dates
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Issue 14 (21 July 1988)
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Exact enumeration method for diffusion-limited aggregation
S Havlin and B L Trus 1988 J. Phys. A: Math. Gen. 21 L731
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