期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 5, 页码 871-874出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.871
关键词
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We investigate the nonparametric, pure ac driven dynamics of nonlinear Klein-Gordon solitary waves having an internal mode of frequency Omega(i). We show that the strongest resonance arises when the driving frequency delta = Omega(i)/2, whereas when delta = Omega(i) 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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