  We investigate fermion self energy problem in the strongly coupled dense
medium in holographic approach. By working out bottom up models as well as top
down ones we showed that vanishing thermal mass and non-existence of
temperature generated plasmino mode is the universal feature of the strongly
interacting fermion system. We identified that the dual of the bulk Rashiba
effect, which was recently found by the Herzog et.al, is the presence of the
plasmino mode generated by the density.
