Kinetic Alfvén soliton structure with exchange-correlation potential in quantum plasma

Solitary kinetic Alfvén waves are investigated in low-β electron-ion quantum plasma by considering the exchange-correlation effects of degenerate electrons by using the quantum hydrodynamic fluid model. It is found that both the width and amplitude of kinetic Alfvén solitons are modified in the presence of exchange-correlation effects. Moreover, the kinetic Alfvén soliton with hump profile moves with sub-Alfvénic wave speed. Our results may be helpful where quantum effects and plasma can coexist especially in solid-state objects (i.e. metallic, semiconductors and their nano-objects), inertial confinement fusion system and astrophysical compact objects (i.e. the interior of white dwarf and atmosphere of neutron stars).