2005/09/01 by P. Visco, Paolo Visco, A. Puglisi +7 · 5 citations
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Phase Equilibria and Thermodynamics #Statistical Mechanics and Entropy #cond-mat.stat-mech
paper · pdf · doi:10.1209/epl/i2005-10213-1
published as Europhys. Lett., 72 (1), p. 55 (2005) · accepted in Europhys. Lett
openalex publication_date 2005/09/01 · arxiv created 2005/09/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Our interest goes to the power injected in a heated granular gas and to the possibility to interpret it in terms of entropy flow. We numerically determine the distribution of the injected power by means of Monte Carlo simulations. Then, we provide a kinetic-theory approach to the computation of such a distribution function. Finally, after showing why the injected power does not satisfy a fluctuation relation à la Gallavotti-Cohen, we put forward a new quantity which does fulfill such a relation, and is not only applicable in a variety of frameworks outside the granular world, but also experimentally accessible.