Two body scattering length of Yukawa model on a lattice
  The extraction of scattering parameters from Euclidean simulations of a Yukawa model in a finite volume with periodic boundary conditions is analyzed both in non relativistic quantum mechanics and in quantum field theory. 
F. De Soto, J. Carbonell, C. Roiesnel, Ph. Boucaud, J.P. Leroy, O.   P\`ene