light meson spectroscopy with Ls = 16

values of input light sea quark masses, mseal ≈ 0.85ms,0.59ms and 0.33 ms were used to allow for extrapolations to the physical light quark limit, whilst the heavier sea quark mass was fixed to approximately the physical strange quark mass ms. The exact rational hybrid Monte Carlo algorithm was used to evaluate the fractional powers of the fermion determinants in the ensemble generation. We have found that f� = 127(4) MeV, fK = 157(5) MeV and fK/f� = 1.24(2), where the errors are statistical only, which are in good agreement with the experimental values.