Spatial stochastic resonance in one-dimensional Ising systems.
The one-dimensional Ising model is analytically studied in a spatially periodic and oscillatory external magnetic field using the transfer-matrix method. For low enough magnetic field intensities the correlation between the external magnetic field and the response in magnetization presents a maximum for a given temperature. The phenomenon can be interpreted as a resonance phenomenon induced by the stochastic heat bath. This "spatial stochastic resonance" is realized in the equilibrium state and not as a dynamical response to the external time-periodic driving.
Néda
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Department of Theoretical Physics, Babeş-Bolyai University, str. Kogălniceanu 1, RO-3400 Cluj-Napoca, Romania.
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Ravasz
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Lakdawala
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Gade
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