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arxiv: 0812.1680 · v1 · submitted 2008-12-09 · ✦ hep-lat

Towards a determination of Csw using Numerical Stochastic Perturbation Theory (NSPT)

classification ✦ hep-lat
keywords nsptintegratorsnumericalaccuracyactioncoefficientcomputecomputer-time
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We outline a strategy to compute the second-loop contribution to the Csw coefficient of the Sheikoleslami-Wohlert-Wilson fermion action by means of NSPT. We also present preliminary results for higher-order integrators for the Langevin evolution within NSPT. At fixed numerical accuracy, these integrators considerably reduce the required computer-time.

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