On the Scaling Limit of the 1D Hubbard Model at Half Filling
arXiv:cond-mat/9410043 · doi:10.1016/0550-3213(95)00105-2
Abstract
The dispersion relations and S-matrix of the one-dimensional Hubbard model at half filling are considered in a certain scaling limit. (In the process we derive a useful small-coupling expansion of the exact lattice dispersion relations.) The resulting scattering theory is consistently identified as that of the SU(2) chiral-invariant Thirring (or Gross-Neveu) field theory, containing both massive and massless sectors.
14 pages in harvmac, Tel-Aviv preprint TAUP 2203-94