Noise Stabilization of Self-Organized Memories

Details Noise Stabilization of Self-Organized Memories Noise Stabilization of Self-Organized Memories

1998-12-31

arxiv.org/abs/cond-mat/9812436v1

Physics

Condensed Matter

29 pages, 6 figures, submitted to Physical Review E

Scientific paper

10.1103/PhysRevE.59.4970

We investigate a nonlinear dynamical system which ``remembers'' preselected values of a system parameter. The deterministic version of the system can encode many parameter values during a transient period, but in the limit of long times, almost all of them are forgotten. Here we show that a certain type of stochastic noise can stabilize multiple memories, enabling many parameter values to be encoded permanently. We present analytic results that provide insight both into the memory formation and into the noise-induced memory stabilization. The relevance of our results to experiments on the charge-density wave material $NbSe_3$ is discussed.

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