Higher-order nonlinear electron-acoustic solitary excitations in partially degenerate quantum electron-ion plasmas

摘要

Propagation of dressed solitary excitations are studied in a partiallydegenerate quantum plasma in the framework of quantum-hydrodynamics (QHD) modelusing multiple scales technique. The evolution equation together with a linearinhomogeneous differential equation is solved using Kodama-Taniutirenormalizing technique. It is shown that the type of solitary excitations(bright or dark) is defined by two critical plasma parameter values.