Chiral extrapolation of light-light and heavy-light decay constants in   unquenched QCD
  We test the one-loop chiral perturbation theory formula on unquenched lattice data of pseudoscalar meson decay constants. The chiral extrapolation including the effect of the chiral logarithm is attempted and its uncertainty is discussed. 
JLQCD collaboration: S. Hashimoto, S. Aoki, M. Fukugita, K-I.   Ishikawa, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. ...