Quenched twisted mass QCD at small quark masses and in large volume
نویسندگان
چکیده
As a test of quenched lattice twisted mass QCD, we compute the non-perturbatively O(a) improved pseudoscalar and vector meson masses and the pseudoscalar decay constant down to MPS/MV = 0.467(13) at β = 6 in large volume. We check the absence of exceptional configurations and – by further data at β = 6.2 – the size of scaling violations. The CPU time cost for reaching a given accuracy is close to that with ordinary Wilson quarks at MPS/MV ≃ 0.6 and grows smoothly as MPS/MV decreases.
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