Journal Article

Soliton-like behavior of traveling bands in self-propelled soft particles

Takao Ohta and Sadato Yamanaka

in Progress of Theoretical and Experimental Physics

Published on behalf of The Physical Society of Japan

Volume 2014, issue 1
Published online January 2014 | e-ISSN: 2050-3911 | DOI: http://dx.doi.org/10.1093/ptep/ptt111

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We have found through numerical simulations of interacting self-propelled deformable particles in two dimensions that traveling bands of ordered state are not destroyed upon a head-on collision just like solitons in integrable systems. Quite recently, Kuwayama and Ishida have reported experiments of non-chemotactic Dictyostelium discoideum mutants in which density waves of migrating cells exhibit a soliton-like behavior upon collision. We investigate properties of the traveling bands to clarify the similarities and differences between the theoretical and experimental results.

Keywords: A34; J45; J56

Journal Article.  2727 words.  Illustrated.

Subjects: Classical Mechanics ; Physics ; Biological and Medical Physics

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