Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 150, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5081122
Keywords
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Funding
- Human Frontier Science Program [RGP0061/2013]
- DFG [KR 4867/2-1]
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A number of microorganisms leave persistent trails while moving along surfaces. For single-cell organisms, the trail-mediated self-interaction will influence the dynamics. It has been discussed recently [Kranz et al., Phys. Rev. Lett. 117, 038101 (2016)] that the self-interaction may localize the organism above a critical coupling (c) to the trail. Here, we will derive a generalized active particle model capturing the key features of the self-interaction and analyze its behavior for smaller couplings < (c). We find that fluctuations in propulsion speed shift the localization transition to stronger couplings.
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