Temporal asymmetry of fluctuations in nonequilibrium steady states.
Temporal asymmetries of fluctuation paths in nonequilibrium microscopic shearing systems are observed for the first time. Inspired by theories that predict asymmetry of fluctuation paths in stochastic dynamics, we focus on deterministic reversible particle models, which represent a small part of a macroscopic system. We have monitored and measured the asymmetry of the fluctuation paths of various observables as they go away from and towards the mean. The understanding of such asymmetries may scatter light on how irreversibility emerges from the microscopic reversible dynamics and on the behavior of mesoscopic (nanoscale) systems.
Nanoscale Science and Technology Centre, School of Science, Griffith University, Brisbane, Qld 4111, Australia. carlo.paneni@student.griffith.edu.au
Carlo
C
Paneni
Debra J
DJ
Searles
Lamberto
L
Rondoni