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RISSoliton–potential interaction in the nonlinear Klein–Gordon model
The interaction of solitons with external potentials in the nonlinear Klein–Gordon field theory is investigated using an improved model. The presented model has been constructed with a better approximation for adding the ...
Effect of high relativistic ions on ion acoustic solitons in electron-ion-positron plasmas with nonthermal electrons and thermal positrons
Propagation of ion acoustic solitary waves are studied in e-p-i plasmas containing high relativistic ions,
Maxwell–Boltzmann distributed positrons and nonthermal electrons. Reductive perturbation method is used and ...
Collective-Coordinate Analysis of Inhomogeneous Nonlinear Klein–Gordon Field Theory
Two different sets of collective-coordinate equations for solitary solutions of nonlinear Klein–
Gordon (NKG) model are introduced. The collective coordinate equations are derived using different
approaches ...
Interaction of sine-Gordon kinks and breathers with a PT-symmetric defect
The scattering of kinks and low-frequency breathers of the nonlinear sine-Gordon (SG) equation on a spatially localized PT-symmetric perturbation (defect) with a balanced gain and loss is investigated numerically. It is ...
The effect of the Phi4 kink’s internal mode during scattering on PT-symmetric defect
The effect of the Phi4 kink’s internal mode (IM) during the scattering from a PT -symmetric defect is investigated. It is demonstrated that if a Phi4 kink hits the defect from the gain side, a noticeable IM is excited, ...
Kink scattering from a parity-time-symmetric defect in the φ^4 model
In this paper, we study the ϕ4 kink scattering from a spatially localized PT-symmetric defect and the effect of the kink's internal mode (IM) is discussed. It is demonstrated that if a kink hits the defect from the gain ...