Exact Ground State and Finite Size Scaling in a Supersymmetric Lattice Model

Matteo Beccaria, Gian Fabrizio De Angelis

We study a model of strongly correlated fermions in one dimension with extended N=2 supersymmetry. The model is related to the spin $S=1/2$ XXZ Heisenberg chain at anisotropy $Δ=-1…