A new moving frame to extract scattering phases in lattice QCD
  We present a derivation of the finite-size formulae in a moving frame with total momentum P=(2\pi/L)(e1+e2). These formulae allow us to calculate the S-wave and P-wave scattering phases at more energies with a fixed lattice size and thus help us to determine the resonance parameters precisely. 
Xu Feng, Karl Jansen and Dru B. Renner
hep-lat