Transformation of statistics in fractional quantum Hall systems

A Fermion to Boson transformation is accomplished by attaching to each Fermion a tube carrying a single quantum of flux oriented opposite to the applied magnetic field. When the mean field approximation is made in Haldaneʹs spherical geometry, the Fermion angular momentum lF is replaced by View the MathML source. The set of allowed total angular momentum multiplets is identical in the two different pictures. The Fermion and Boson energy spectra in the presence of many body interactions are identical only if the pseudopotential V (interaction energy as a function of pair angular momentum L12) increases as L12(L12+1). Similar bands of low energy states occur in the two spectra if V increases more quickly than this.