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Monte-Carlo studies on three-species two-particle diffusion-limited reactions

Author

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  • Lee, Jae Woo
  • Hong, Byoung Hee

Abstract

We studied two models of three-species two-particle diffusion-limited reactions with and without a drift. Model A involves annihilations A+B→0, B+C→0, and C+A→0 with hard-core interactions between like species, and assumes equal initial densities of the species. The density decays according to a power law, C(t)∼t−α. The critical exponent was estimated as α=0.353(6) without the drift and α=0.390(4) with the maximum drift. Model B is a coagulation model as A+B→C, B+C→A, and C+A→B. In this model we observed the critical exponent α=12 regardless of the drift. We argue that model B belongs to the same universality class as single species annihilation or coagulation diffusion limited reactions. We also studied the average distance of the nearest-neighbor species, the average domain size, and the average number of the species pairs.

Suggested Citation

  • Lee, Jae Woo & Hong, Byoung Hee, 1998. "Monte-Carlo studies on three-species two-particle diffusion-limited reactions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 256(3), pages 351-358.
    • Handle: RePEc:eee:phsmap:v:256:y:1998:i:3:p:351-358
    DOI: 10.1016/S0378-4371(98)00209-X
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