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Hydrodynamic Fluctuations and Instabilities in Ordered Suspensions of Self-Propelled Particles

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Aditi Simha, R., Ramaswamy, Sriram·2002·Physical Review Letters

Abstract

We construct the hydrodynamic equations for suspensions of self-propelled particles (SPPs) with spontaneous orientational order, and make a number of striking, testable predictions: (i) Nematic SPP suspensions are always absolutely unstable at long wavelengths. (ii) SPP suspensions support novel propagating modes at long wavelengths, coupling orientation, flow, and concentration. (iii) In a wave number regime accessible only in low Reynolds number systems such as bacteria, polar-ordered suspensions are invariably convectively unstable. (iv) The variance in the number N of particles, divided by the mean , diverges as (2/3 ) in polar-ordered SPP suspensions.

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Metadata

Authors
Aditi Simha, R., & Ramaswamy, S.
Venue
Physical Review Letters
Published
2002-07-15
Volume
89
Issue
5
Pages
058101-058101
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2090370210
Cited by
956
References
0
FWCI
5.46
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Hydrodynamic Fluctuations and Instabilities in Ordered Suspensions of Self-Propelled Particles. https://app.cochat.ai/papers/10.1103/physrevlett.89.058101
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Aditi Simha, R., & Ramaswamy, S. (2002). Hydrodynamic Fluctuations and Instabilities in Ordered Suspensions of Self-Propelled Particles. Physical Review Letters. https://doi.org/10.1103/physrevlett.89.058101

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