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

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

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

Afiliación

Aranson IS; Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA. aronson@msd.anl.gov

Science ; 320(5876): 612; author reply 612, 2008 May 02.

Article en En | MEDLINE | ID: mdl-18451285

RESUMEN

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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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2008 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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