Abstract
We report on preliminary numerical results on linear stability (Floquet) analysis of discrete breather solutions of the resistively and capacitively shunted junction (RCSJ) dynamics of an anisotropic ladder of Josephson junctions biased by time periodic, uniform currents, Different types of bifurcations, driven by exponentially localized eigenvectors of the monodromy matrix, are shown to destabilize the intrinsic localized modes, when parameters such as Josephson coupling, resistive coupling or external currents intensity are varied. We show some two-dimensional sections of the computed sector of the stability phase diagram in the corresponding parameter space.
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