Quintero, Niurka R.Sánchez, AngelMertens, Franz G.2012-08-242012-08-242000-01-31Physical Review Letters, vol. 84, n. 5, 31 jan. 2000. Pp. 871-8740031-9007 (print version)1079-7114 (online version)https://hdl.handle.net/10016/15127We 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.application/pdfengresearch articleMatemáticas10.1103/PhysRevLett.84.871open access