Supratransmission-induced traveling breathers in long Josephson junctions
- Autori: Duilio De Santis; Claudio Guarcello; Bernardo Spagnolo; Angelo Carollo; Davide Valenti
- Anno di pubblicazione: 2022
- Tipologia: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/569652
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.