Towards a determination of Csw using Numerical Stochastic Perturbation Theory (NSPT)
C. Torrero, G.S. Bali
TL;DR
This paper proposes a strategy using Numerical Stochastic Perturbation Theory to compute the Csw coefficient for Wilson fermions, demonstrating that higher-order integrators improve computational efficiency.
Contribution
It introduces a method to calculate the second-loop contribution to Csw with NSPT and presents preliminary results showing the efficiency of higher-order Langevin integrators.
Findings
Higher-order integrators reduce computational time at fixed accuracy
Preliminary results support the effectiveness of the proposed method
Strategy advances the precision of Csw coefficient calculations
Abstract
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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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Atomic and Subatomic Physics Research · Quantum, superfluid, helium dynamics