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VOLUME 37 (1983) | ISSUE 10 | PAGE 486
Dynamical chaos and spontaneous symmetry breaking in anharmonic systems excited by a periodic external force
It is shown that in anharmonic systems having a symmetric potential under excitation by a periodic force, a necessary condition for dynamical chaos to arise through period doubling is the spontaneous breaking of symmetry. The nature of the low-frequency peak, which appears in the Fourier spectrum at the onset of dynamical chaos, is discussed.