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The vector meson mass is extracted from a large sample of partially quenched, two-flavor lattice QCD simulations. For the first time, discretisation, finite-volume and partial quenching artefacts are treated in a unified framework which is consistent with the low-energy behaviour of QCD. This analysis incorporates the leading infrared behaviour dictated by(More)
In lattice QCD, the maximum entropy method can be used to reconstruct spectral functions from Euclidean correlators obtained in numerical simulations. We show that at finite temperature the most commonly used algorithm, employing Bryan's method, is inherently unstable at small energies and gives a modification that avoids this. We demonstrate this approach(More)
Quantum Chromodynamics (QCD) is an application area that requires access to large super-computing resources and generates huge amounts of raw data. UKQCD currently stores and requires access to around five terabytes of data, a figure that is expected to grow dramatically as the collaborations purpose built HPC system, QCDOC, comes on line in 2004. This data(More)
Using the results of several quenched lattice simulations, we predict the value of the strange and charm quark masses in the continuum at the next-to-leading order, m M S s (µ = 2 GeV) = (128 ± 18) MeV and m M S ch (µ = 2 GeV) = (1.48± 0.28) GeV. The errors quoted above have been estimated by taking into account the original statistical error of the lattice(More)
We present preliminary results for meson spectral functions at nonzero momentum, obtained from quenched lattice QCD simulations at finite temperature using the Maximal Entropy Method. Twisted boundary conditions are used to have access to many momenta p ∼ T. For light quarks, we observe a drastic modification when heating the system from below to above T c.(More)
In this paper we study O(2000) (quenched) lattice configurations from the APE collaboration, for different lattice volumes and for 6.0 ≤ β ≤ 6.4 using both the Wilson and the SW-Clover fermion actions. We determine the light hadronic spectrum and meson decay constants and study the mesonic dispersion relation. We extract the hadronic variable J and the(More)