Lattice models with N = 2 supersymmetry
Physical Review Letters 90:12 (2003)
Abstract:
Lattice models with N = 2 supersymmetry are introduced. It is shown that the continuum limit of the simplest of these models is a well known (1 + 1)-dimensional quantum field theory with N = (2,2) superconformal symmetry. The close connections with models of current interest in the study of strongly correlated electrons is noted. Furthermore, it is demonstrated how supersymmetry can be useful in studying their properties.Dynamical structure factor of the anisotropic Heisenberg chain in a transverse field
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Finite Temperature Spectral Function of Mott Insulators and Charge Density Wave States
Physical Review Letters 90 (2003) 126401 4pp