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

I. S. Aranson, A. Snezhko, J. S. Olafsen, J. S. Urbach

Research output: Contribution to journalComment/debate

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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)
Pages (from-to)612c
JournalScience
Volume320
Issue number5876
DOIs
StatePublished - May 2 2008

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