Integrable multiparametric quantum spin chains
  Using Reshetikhin's construction for multiparametric quantum algebras we obtain the associated multiparametric quantum spin chains. We show that under certain restrictions these models can be mapped to quantum spin chains with twisted boundary conditions. We illustrate how this general formalism applies to construct multiparametric versions of the supersymmetric t-J and U models. 
Angela Foerster (Instituto de Fisica da UFRGS, Brazil), Jon Links   (Department of Mathematics, University of Queensland, Au...