Landau quantization effects on damping Kawahara solitons in electron–positron–ion plasma in rotating ionized medium  

作　　者：E I El-Awady S Hussain N Akhtar 

机构地区：[1]Department of Physics,Faculty of Science,Port Said University,Port Said 42521,Egypt [2]Theoretical Physics Division(TPD),PINSTECH,P.O.Nilore 45650,Islamabad,Pakistan

出　　处：《Communications in Theoretical Physics》2024年第10期141-150,共10页理论物理通讯（英文版）

摘　　要：For the dynamics of three-dimensional electron–positron–ion plasmas,a fluid quantum hydrodynamic model is proposed by considering Landau quantization effects in dense plasma.Ion–neutral collisions in the presence of the Coriolis force are also considered.The application of the reductive perturbation technique produces a wave evolution equation represented by a damped Korteweg–de Vries equation.This equation,however,is insufficient for describing waves in our system at very low dispersion coefficients.As a result,we considered the highest-order perturbation,which resulted in the damped Kawahara equation.The effects of the magnetic field,Landau quantization,the ratio of positron density to electron density,the ratio of positron density to ion density,and the direction cosine on linear dispersion laws as well as soliton and conoidal solutions of the damped Kawahara equation are explored.The understanding from this research can contribute to the broader field of astrophysics and aid in the interpretation of observational data from white dwarfs.

关 键 词：Kawahara equation solitary and cnoidal waves quantum plasma magnetoplasmas Landau quantization Coriolis force 

分 类 号：O53[理学—等离子体物理]