Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-09-17
J. Theor. Biol. 231, 279 (2004)
Physics
Condensed Matter
Statistical Mechanics
Scientific paper
Motivated by recent experimental work of Burd et al., we propose a model of bi-directional ant-traffic on pre-existing ant-trails. It captures in a simple way some of the generic collective features of movements of real ants on a trail. Analyzing this model, we demonstrate that there are crucial qualitative differences between vehicular- and ant-traffics. In particular, we predict some unusual features of the flow rate that can be tested experimentally. As in the uni-directional model a non-monotonic density-dependence of the average velocity can be observed in certain parameter regimes. As a consequence of the interaction between oppositely moving ants the flow rate can become approximately constant over some density interval.
Chowdhury Debashish
John Alexander
Nishinari Katsuhiro
Schadschneider Andreas
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