Double stochastic resonance peaks in systems with dynamic phase transitions

Details Double stochastic resonance peaks in systems with dynamic phase transitions Double stochastic resonance peaks in systems with dynamic phase transitions

2001-08-18

arxiv.org/abs/cond-mat/0108288v1

Europhys. Lett. 56, 333 (2001).

Physics

Condensed Matter

Statistical Mechanics

7 pages, accepted in Europhys. Lett

Scientific paper

10.1209/epl/i2001-00524-7

To probe the connection between the dynamic phase transition and stochastic resonance, we study the mean-field kinetic Ising model and the two-dimensional Josephson-junction array in the presence of appropriate oscillating magnetic fields. Observed in both systems are {\it double} stochastic resonance peaks, one below and the other above the dynamic transition temperature, the appearance of which is argued to be a generic property of the system with a continuous dynamic phase transition. In particular, the frequency matching condition around the dynamic phase transition between the external drive frequency and the internal characteristic frequency of the system is identified as the origin of such double peaks.

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