QUANTUM NUMBERS OF TEXTURED HALL-EFFECT QUASI-PARTICLES

We propose a class of variational wave functions with slow variation i n spin and charge density and simple vortex structure at infinity, whi ch properly generalize both the Laughlin quasiparticles and baby Skyrm ions. We argue, on the basis of these wave functions and a spin-statis tics relation in the relevant effective field theory, that the spin of the corresponding quasiparticle has a fractional part related in a un iversal fashion to the properties of the bull; state. We propose a dir ect experimental test of this claim. We show that certain spin-singlet quantum Hall states can be understood as arising from primary polariz ed states by Skyrmion condensation.