Constant curvature solutions of Grassmannian sigma models: (2)   Non-holomorphic solutions
  We generalize here our general procedure for constructing constant curvature maps of 2-spheres into Grassmannian manifolds G(m,n) this time concentrating our attention on maps which are non-holomorphic. We present some expressions describing these solutions in the general case and discuss how to use these results to construct solutions of constant curvature. We also discuss possible values of this constant curvature. 
Laurent Delisle, V\'eronique Hussin and Wojtek J. Zakrzewski
math-ph math.DG math.MP