Fluctuation Ratios in the Absence of Microscopic Time Reversibility

Details Fluctuation Ratios in the Absence of Microscopic Time Reversibility Fluctuation Ratios in the Absence of Microscopic Time Reversibility

2009-02-24

arxiv.org/abs/0902.4198v1

Phys. Rev. E 79, 030102(R) (2009)

Physics

Condensed Matter

Statistical Mechanics

4 figures, to appear in Physical Review E as a Rapid Communication

Scientific paper

10.1103/PhysRevE.79.030102

We study fluctuations in diffusion-limited reaction systems driven out of their stationary state. Using a numerically exact method, we investigate fluctuation ratios in various systems which differ by their level of violation of microscopic time reversibility. Studying a quantity that for an equilibrium system is related to the work done to the system, we observe that under certain conditions oscillations appear on top of an exponential behavior of transient fluctuation ratios. We argue that these oscillations encode properties of the probability currents in state space.

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