  By taking into account the possibility of all the intralayer as well as the
interlayer current orderings, we derive an eight-band model for interacting
electrons in bilayer graphene. With the numerical solution to the model, we
show that only the current orderings between the same sublattice sites can
exist within the range of the physical interacting strength. This result
confirms our previous model of spin-polarized-current phase for the
ground-state of interacting electrons in bilayer graphene that resolves a
number of experimental puzzles.
