Pion-pion scattering phase shifts with the stochastic LapH method
  Progress in calculating scattering phase shifts on $N_f=2+1$ anisotropic clover Wilson lattices is described. The stochastic LapH method facilitates computations in large volumes and for light pion masses. Results for pion masses down to 240 MeV, keeping $m_\pi L > 4$, are presented. 
Brendan Fahy and John Bulava and Ben H\"orz and Keisuke J. Juge and   Colin Morningstar and Chik Him Wong
hep-lat