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نمایش تعداد 1-10 از 138
Solitary waves in dusty plasmas with variable dust charge and nonthermal ions
density. We derive solitons of modified KP equation with finite amplitude in this situation....
Solitary waves in dusty plasmas with variable dust charge and two temperature ions
for this system has been proposed. This potential is used to study the stability conditions and existence of solitonic solutions. Also, it is shown that a rarefactive soliton can be propagates in most of the cases. The soliton energy has been calculated and a...
Interaction of topological solitons with defects: using a nontrivial metric
Interaction of topological solitons with defects:
using a nontrivial metric...
Interaction of Topological solitons with defects: Collective coordinate method
By including a potential into the flat metric, we study the interaction of sine-Gordon soliton with different potentials. We will show numerically that while the soliton-barrier system shows fully classical behaviour, the soliton-well system...
Soliton-potential interaction in the phi4 model
A model for the soliton-potential scattering is presented. This model is constructed with a better approximation for adding the potential to the Lagrangian through the metric of background space time. The results of the model are compared with other...
Head-on collision of electron-acoustic solitary waves in a plasma with superthermal hot electrons
The head-on collision between two electron-acoustic solitary waves in an unmagnetized plasma is investigated, including a cold electron fluid, hot electrons obeying a superthermal distribution and stationary ions. By using ...
Soliton–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 potential to the Lagrangian...
A comprehensive investigation of variations in melting range and NMR data of 2,4-dinitrophenylhydrazine derivatives
The well-known characterization method of aldehydes and ketones utilizing their 2,4-
dinitrophenylhydrazones (DNPs) often gives variable melting ranges and conflicting results for a single
derivative. We have ...
Ion acoustic solitary waves in electron-positron-ion plasmas with q-nonextensive electrons and high relativistic ions
the nonlinear waves in such plasmas. The amplitude and the width of the solitons are derived and the effects of relativistic ions and q-nonextensive distribution of electrons on these quantities are discussed....
Interaction of Double Sine-Gordon Solitons with External Potentials: an Analytical Model
Interaction of double sine-Gordon solitons with a space dependent potential wall as well as a potential well is investigated by employing an analytical model based on the collective coordinate approach. The potential is added to the model through a...