Chiral extrapolations of baryon masses for unquenched three-flavor   lattice simulations
  We have analyzed the chiral expansion of the baryon masses to second order in the quark masses, including strong isospin violation. The calculations are performed in Lorentz-invariant baryon chiral perturbation theory. Chiral extrapolation functions for three-flavor unquenched lattice simulations are derived. The matching to the two-flavor case and the sigma terms are also considered. 
Matthias Frink, Ulf-G. Mei{\ss}ner