Finite Volume at Two-loops in Chiral Perturbation Theory
  We calculate the finite volume corrections to meson masses and decay constants in two and three flavour Chiral Perturbation Theory to two-loop order. The analytical results are compared with the existing result for the pion mass in two-flavour ChPT and the partial results for the other quantities. We present numerical results for all quantities. 
Johan Bijnens and Thomas R\"ossler (Lund)
hep-lat hep-ph