Fluctuations of Internal Energy Flow in a Vibrated Granular Gas
Fluctuations of Internal Energy Flow in a Vibrated Granular Gas
The nonequilibrium fluctuations of power flux in a fluidized granular media have been recently measured in an experiment [Phys. Rev. Lett. 92, 164301 (2004)], which was announced to be a verification of the fluctuation relation (FR) by Gallavotti and Cohen. An effective temperature was also identified and proposed to be …