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RESEARCH PRODUCT
Supratransmission-induced traveling breathers in long Josephson junctions
Duilio De SantisClaudio GuarcelloBernardo SpagnoloAngelo CarolloDavide Valentisubject
Numerical AnalysisSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciStatistical Mechanics (cond-mat.stat-mech)Condensed Matter - Mesoscale and Nanoscale PhysicsLong Josephson junctions; Traveling sine-Gordon breathers; Nonlinear supratransmission; Stochastic fluctuationsApplied MathematicsFOS: Physical sciencesStochastic fluctuationsNonlinear supratransmissionLong Josephson junctionsTraveling sine-Gordon breathersModeling and SimulationMesoscale and Nanoscale Physics (cond-mat.mes-hall)Nonlinear Sciences::Pattern Formation and SolitonsCondensed Matter - Statistical Mechanicsdescription
The emergence of travelling sine-Gordon breathers due to the nonlinear supratransmission effect is theoretically studied in a long Josephson junction driven by suitable magnetic pulses, taking into account the presence of dissipation, a current bias, and a thermal noise source. The simulations clearly indicate that, depending on the pulse's shape and the values of the main system parameters, such a configuration can effectively yield breather excitations only. Furthermore, a nonmonotonic behavior of the breather-only generation probability is observed as a function of the noise intensity. Finally, the dynamics of the supratransmission-induced breathers is characterized by looking at quantities such as their radiative decay lifetime and the medium's energy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-01 | Communications in Nonlinear Science and Numerical Simulation |