Comment on "Long-lived giant number fluctuations in a swarming granular nematic"

Igor Aronson, A. Snezhko, J. S. Olafsen, J. S. Urbach

Research output: Contribution to journalComment/debate

35 Citations (Scopus)

Abstract

Narayan et al. (Reports, 6 July 2007, p. 105) reported giant number fluctuations attributed to curvature-driven active currents specific for nonequilibrium nematic systems. We present data demonstrating that similar results can be found in systems of spherical particles due either to inelastic clustering or persistent density inhomogeneity, suggesting two alternative explanations for their results.

Original languageEnglish (US)
JournalScience
Volume320
Issue number5876
DOIs
StatePublished - May 2 2008

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Cluster Analysis

All Science Journal Classification (ASJC) codes

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Cite this

Aronson, Igor ; Snezhko, A. ; Olafsen, J. S. ; Urbach, J. S. / Comment on "Long-lived giant number fluctuations in a swarming granular nematic". In: Science. 2008 ; Vol. 320, No. 5876.
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Comment on "Long-lived giant number fluctuations in a swarming granular nematic". / Aronson, Igor; Snezhko, A.; Olafsen, J. S.; Urbach, J. S.

In: Science, Vol. 320, No. 5876, 02.05.2008.

Research output: Contribution to journalComment/debate

TY - JOUR

T1 - Comment on "Long-lived giant number fluctuations in a swarming granular nematic"

AU - Aronson, Igor

AU - Snezhko, A.

AU - Olafsen, J. S.

AU - Urbach, J. S.

PY - 2008/5/2

Y1 - 2008/5/2

N2 - Narayan et al. (Reports, 6 July 2007, p. 105) reported giant number fluctuations attributed to curvature-driven active currents specific for nonequilibrium nematic systems. We present data demonstrating that similar results can be found in systems of spherical particles due either to inelastic clustering or persistent density inhomogeneity, suggesting two alternative explanations for their results.

AB - Narayan et al. (Reports, 6 July 2007, p. 105) reported giant number fluctuations attributed to curvature-driven active currents specific for nonequilibrium nematic systems. We present data demonstrating that similar results can be found in systems of spherical particles due either to inelastic clustering or persistent density inhomogeneity, suggesting two alternative explanations for their results.

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U2 - 10.1126/science.1153456

DO - 10.1126/science.1153456

M3 - Comment/debate

VL - 320

JO - Science

JF - Science

SN - 0036-8075

IS - 5876

ER -