Volume 86, Number 4, May 2009
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||03 June 2009|
Self-organized pattern formation in a diverse attractive-repulsive swarm
National Institute of Physics University of the Philippines - Diliman, Quezon City 1101, Philippines
Corresponding author: email@example.com
Accepted: 30 April 2009
A diverse, asynchronous swarm consisting of N mobile, attractive-repulsive particles evolves inside a two-dimensional confinement. Each particle k is characterized by a preferred neighboring distance determined from a truncated normal distribution of mean and standard deviation , for . Pairwise particle interaction is either attractive or repulsive depending on whether the distance between two particles is greater or less than . The swarm forms self-organized metastable patterns as particles adjust their positions via random asynchronous evolution. An order parameter U is defined as a measure for pattern metastability, which is found to exhibit a first-order phase transition at = 0.606. For tetrapolar patterns are formed, whereas for stellate patterns are formed. This work explores the role of diversity in self-organized pattern formation in an attractive-repulsive swarm system.
PACS: 87.23.Cc – Population dynamics and ecological pattern formation / 05.65.+b – Self-organized systems / 87.18.Hf – Spatiotemporal pattern formation in cellular populations
© EPLA, 2009
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