First results with two light flavours of quarks with maximally twisted mass
نویسندگان
چکیده
We report on first results of an ongoing effort to simulate lattice QCD with two degenerate flavours of quarks by means of the twisted mass formulation tuned to maximal twist. By utilising recent improvements of the HMC algorithm, pseudo-scalar masses well below 300MeV are simulated on volumes L3 · T with T = 2L and L > 2fm and at values of the lattice spacing a . 0.1fm. We present first evidence that scaling violations in the pseudo-scalar decay constant are small and well compatible with O(a) improvement. Additionally, exploratory results for the case of N f = 2 + 1 + 1 flavours are discussed.
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