Comment on "Long-lived giant number fluctuations in a swarming granular nematic".
editorial · Level V
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- Record sourced from PubMed, PMID 18451285.
- Also identified by DOI 10.1126/science.1153456.
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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.