The emergence of traveling sine-Gordon breathers due to the nonlinear supratrans-mission 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.

Duilio De Santis, Claudio Guarcello, Bernardo Spagnolo, Angelo Carollo, Davide Valenti (2022). Supratransmission-induced traveling breathers in long Josephson junctions. COMMUNICATIONS IN NONLINEAR SCIENCE & NUMERICAL SIMULATION, 115(SI) [10.1016/j.cnsns.2022.106736].

Supratransmission-induced traveling breathers in long Josephson junctions

Duilio De Santis
;
Claudio Guarcello;Bernardo Spagnolo;Angelo Carollo;Davide Valenti
2022-12-01

Abstract

The emergence of traveling sine-Gordon breathers due to the nonlinear supratrans-mission 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.
dic-2022
Settore FIS/02 - Fisica Teorica, Modelli E Metodi Matematici
Duilio De Santis, Claudio Guarcello, Bernardo Spagnolo, Angelo Carollo, Davide Valenti (2022). Supratransmission-induced traveling breathers in long Josephson junctions. COMMUNICATIONS IN NONLINEAR SCIENCE & NUMERICAL SIMULATION, 115(SI) [10.1016/j.cnsns.2022.106736].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/569652
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