Can colored noise improve stochastic resonance

Conference · Fri Jan 01 04:00:00 EST 1993 · Journal of Statistical Physics; (United States)

OSTI ID:6691423

Haenggi, P; Jung, P; Zerbe, C ^[1]; Moss, F ^[2]

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1. Univ. of Augsburg (Germany)
2. Univ. of Missouri, St. Louis (United States)

The phenomenon of stochastic resonance is studied in the presence of colored noise. Several sources of colored noise are introduced and the consequences for the asymptotic time-periodic probability and the (phase-averaged) power spectrum are discussed. Based on space-time symmetry considerations, selection rules for the occurrence of [delta]-spikes in the power spectrum are derived. The effect of colored noise on the amplification of small periodic signals is studied in terms of effective, time-periodic Fokker-Planck equations: In overdamped systems driven by colored noise, the authors find that SR is suppressed with increasing noise color. In contrast, for colored noise induced by inertia (as well as for asymmetric dichotomic noise), one obtains an enhancement of SR. This latter result is obtained by studying the Kramers equation perturbed by a small periodic force. 39 refs., 3 figs.

• OSTI ID: 6691423
• Report Number(s): CONF-9203226--; CNN: 0770; N 00014-90-J-1327
• Conference Information: Journal Name: Journal of Statistical Physics; (United States) Journal Volume: 70:1-2
• Country of Publication: United States
• Language: English

Related Subjects

661300* -- Other Aspects of Physical Science-- (1992-)
664200 -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
AMPLIFICATION
MATHEMATICAL MODELS
NOISE
POWER
PROBABILITY
RESONANCE
SELECTION RULES
SIGNALS
SPACE-TIME
SPECTRA
STATISTICAL MODELS
STOCHASTIC PROCESSES