Publication: Anomalous resonance phenomena of solitary waves with internal modes
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ISSN: 0031-9007 (print version)
ISSN: 1079-7114 (online version)
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2000-01-31
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American Physical Society
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Abstract
We investigate the nonparametric, pure ac driven dynamics of nonlinear Klein-Gordon solitary waves
having an internal mode of frequency Vi . We show that the strongest resonance arises when the driving
frequency d Vi 2, whereas when d Vi the resonance is weaker, disappearing for nonzero damping.
At resonance, the dynamics of the kink center of mass becomes chaotic. As we identify the resonance
mechanism as an indirect coupling to the internal mode due to its symmetry, we expect similar results
for other systems.
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Physical Review Letters, vol. 84, n. 5, 31 jan. 2000. Pp. 871-874