A microscopic theory of skyrmion excitations in the fractional quantum   Hall system
  We present a microscopic theory of skyrmion and antiskyrmion excitations in fractional quantum Hall systems, and calculate in an analytical fashion their excitation energies. From the calculated net spins at various fractional filling factors, we find the magnetic field dependence of the spin polarization of the skyrmion-condensated state. 
Kang-Hun Ahn and K. J. Chang