Non-Abelian BFFT embedding, Schr\"odinger quantization and the anomaly   of the O(N) nonlinear sigma model
  We embed the O(N) nonlinear sigma model in a non-Abelian gauge theory. As a first class system, it is quantized using two different approaches: the functional Schr\"odinger method and the non-local field-antifield procedure. Firstly, the quantization is performed with the functional Schr\"{o}dinger method, for N=2, obtaining the wave functionals for the ground and excited states. In the second place, using the BV formalism we compute the one-loop anomaly. This important result shows that the classical gauge symmetries, appearing due to the conversion via BFFT method, are broken at the quantum level. 
E. M. C. Abreu (UNESP/Guaratingueta), J. Ananias Neto, W. Oliveira and   G. Oliveira-Neto (U.F.J.F.)