A DIPOLE INTERPRETATION OF THE NU=1 2 STATE

We consider the problem of bosonic particles interacting repulsively i n a strong magnetic field at the filling factor v = 1. We project the system in the lowest Landau level and set up a formalism to map the dy namics into an interacting fermion system. Within a mean field approxi mation we find that the composite fermions behave as a gas oi neutral dipoles and we expect that the low energy limit also describes the phy sical v = 1/2 fermionic state. (C) 1998 Elsevier Science B.V.