The HK model for doped Mott insulators is local in real space when formulated with currents obeying an su_1(2) affine Lie algebra, yielding identical charge susceptibility to the fermionic version.
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Local Current Algebra for the HK Universality Class
The HK model for doped Mott insulators is local in real space when formulated with currents obeying an su_1(2) affine Lie algebra, yielding identical charge susceptibility to the fermionic version.