  Mechanism of the particle-flux separation in the Chern-Simons gauge theory
coupled with nonrelativistic fermions is studied in a nonperturbative method.
This problem is very important for the composite fermion approach to the
fractional quantum Hall effect. We show that due to repulsive interactions
between electrons the composite fermions are stable quasiexcitations in the
half-filled Landau level at low temperature.
