Nucleus-acoustic solitary waves in self-gravitating degenerate quantum plasmas

查看全文 作　　者：D M S [1]Zaman;M [2]Amina;P R [1]Dip;A A [1]Mamun 机构地区：[1]Department of Physics,Jahangirnagar University;[2]Department of EEE,Bangladesh University of Business and Technology(BUBT) 出　　处：《Chinese Physics B》索引2018年第27卷第4期,共7页 摘　　要：Nucleus-acoustic(NA) solitary waves(SWs) propagating in a self-gravitating degenerate quantum plasma(SDQP)system(containing non-relativistically degenerate heavy and light nuclei,and non-/ultra-relativistically degenerate electrons) have been theoretically investigated.The modified Korteweg–de Vries(m K-d V) equation has been derived for both planar and non-planar geometry by employing the reductive perturbation technique.It is shown that the NA SWs exist with positive(negative) electrostatic(self-gravitational) potential.It is also observed that the effects of non-/ultra-relativistically degenerate electron pressure,dynamics of non-relativistically light nuclei,spherical geometry,etc.significantly modify the basic features(e.g.,amplitude,width,speed,etc.) of the NA SWs.The applications of our results,which are relevant to astrophysical compact objects,like white dwarfs and neutron stars,are briefly discussed. 关 键 词：原子核 退化 波浪 独居 声学 血浆 移动 非平面