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arXiv:0711.4946 [cond-mat.soft]AbstractReferencesReviewsResources

Effective temperature of active matter

Davide Loi, Stefano Mossa, Leticia F. Cugliandolo

Published 2007-11-30, updated 2011-05-04Version 2

We follow the dynamics of an ensemble of interacting self-propelled motorized particles in contact with an equilibrated thermal bath. We find that the fluctuation-dissipation relation allows for the definition of an effective temperature that is compatible with the results obtained using a tracer particle as a thermometer. The effective temperature takes a value which is higher than the temperature of the bath and it is continuously controlled by the motor intensity.

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