Bilinear-biquadratic anisotropic Heisenberg model on a triangular lattice

Motivated by the fact that the study of disordered phases at zero temperature is of great interest, I study the spin-one quantum Heisenberg antiferromagent with a next-nearest neighbor interaction on a triangular lattice with bilinear and biquadratic exchange interaction and a single ion anisotropy using a SU(3) Schwinger boson mean field theory.I calculate the critical properties, at zero temperature, in the disordered phase. This is, for values of the single ion anisotropy paramenter D aboce a critical value Dc where a quantum phase transition takes place to a lower D phase.