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The Bradbury Butterfly Effect in Long Josephson Junctions
Authors:K. N. Yugay  E. A. Yashkevich
Affiliation:(1) Dostoevsky Omsk State University, 55a, Mir Avenue, Omsk, 644077, Russia
Abstract:In a well-known science fiction novel by Ray Bradbury, a butterfly in the pre-historic past is accidentally crushed by time travelers and this seemingly insignificant event radically changes history. We will call this the “Bradbury Butterfly” Effect (BBE). We know that such an effect occurs in Long Josephson Junctions as described by a time-dependent nonlinear sine-Gordon equation. This equation states that any alteration within the initial perturbation fundamentally changes the asymptotic state of the system. The actual manifestation of this effect is proven by a numerical simulation of the time-dependent sine-Gordon equation.
Keywords:long Josephson junction  sine-Gordon equation  Lyapunov exponent  dynamical chaos
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