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Título : Self-propelled non-linearly diffusing particles. Aggregation and continuum description.
Autor : López, Cristóbal
Palabras clave : Aggregation
Brownian motion
Numerical analysis
Fecha de publicación : 22-Apr-2005
Editor: American Physical Society
Citación : Physical Review E 72, 061109 (1-5) (2005)
Resumen: We introduce a model of self-propelled particles carrying out a Brownian motion with a diffusion coefficient which depends on the local density of particles within a certain finite radius. Numerical simulations show that in a range of parameters the long-time spatial distribution of particles is non-homogeneous, and clusters can be observed. A number density equation, which explains the emergence of the aggregates and indicates the values of the parameters for which they appear, is derived. Numerical results of this continuum density equation are also shown.
Descripción : 5 pages, 5 figures.-- PACS nrs.: 05.40.-a, 89.75.Kd.-- PMID: 16485933 [PubMed].-- ArXiv pre-print available:
Versión del editor:
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.72.061109
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